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The countdown to Prince William and Kate Middleton's April 29 wedding is on, and the ultimate royal insider, Sharon Osbourne, explains the proper manners required for the wedding of the century to Kevin Frazier!

It's the biggest story on both sides of the pond since Princess Di said "I do!" and "The Talk" co-host Sharon will be part of the "Insider" family jetting off to England to cover the wedding along with Kevin like no one else can.

The duo filmed a fun, special promo in the back of a London cab -- complete with lots of luggage and Sharon and Ozzy's dogs -- on our soundstage for the coming event.

Watch "The Insider" for complete wedding coverage.

Sandra Bullock's mommy and me date with baby Louis! David Beckham works it out on the soccer field! We have all this and more in this edition of Celebrity GPS!

Bullock took son Louis on a Sunday outing in New York, but most of the celebrity happenings were taking place in L.A.!

Soccer star Beckham was seen warming up for his L.A. Galaxy game while the reportedly newly single Bradley Cooper was spotted at the Los Angeles airport.

Meanwhile, Lindsay Lohan was snapped going bowling with her family and Rihanna was photographed at the Montage hotel in Beverly Hills.

Check out the video for more with your favorite stars.

Estranged husband and wife David Arquette and Courteney Cox were spotted in Malibu together over the weekend -- and David reveals if the pair is back together.

The exes left a garden supply store separately and the paparazzi asked David as he was getting in the car if they were again a couple -- to which the actor answered, "no."

Watch the video for more from Courteney and David.

"The Insider" was with "Dancing with the Stars" contestant Kendra Wilkinson as dance partner Louis Van Amstel put her through his rigorous dance class to get her ready for the show's big premiere!

Kendra said she thought her "DWTS" dance rehearsals were hard until she attended this fast-moving dance class. "Louis' dance class is way harder than dance rehearsal. I thought it was going to be a lot easier, but no - it's harder. I actually look like a rookie in here!" 

Louis agreed that his dance class at L.A.'s Crunch gym is hard work, but said it can be a lot more fun than other exercise. "I think dance is the best alternative to workout because you don't really feel you're working out. You're not on the treadmill, you're not on the elliptical, you're dancing to music. And the fact that you burn a heck load of calories, and you're dancing to your favorite music."

Louis said the class is good preparation for Kendra: "Everything tonight is going to be special because we haven't even started the show officially yet, so she (Kendra) only knows one dance and we're doing about six tonight, so everything is going to be very special for her. But the good thing for Kendra is that every dance we do tonight, she will eventually have to do on 'Dancing with the Stars' -- if people vote."

So did Kendra think she was giving her all during the class? "Man, see I didn't want to go all out here because I didn't want to distract my mind -- because too much of something, you get overwhelmed. So I just wanted to have some fun and just loosen up here. Monday's coming up real fast, so I just want to be calm and do the best I can do on Monday."

Watch the video to get a peek of Kendra's dance class experience and be sure to catch the live, two-hour premiere of "Dancing with the Stars" tonight at 8 p.m. on ABC.

Hit rewind and take a ride back to this day in history 12 years ago -- March 21, 1999 -- when the stars stepped out for the Oscars!

Gwyneth Paltrow took home the Best Actress Oscar for 'Shakespeare in Love' that night, and walked the red carpet along with Jennifer Lopez, Renee Zellweger, Celine Dion, Tom Hanks and Rita Wilson, Christina Ricci, Meryl Streep, Liv Tyler, Catherine Zeta-Jones, Mariah Carey, Goldie Hawn and Kurt Russell, Drew Barrymore, Edward Norton and more. Then-couples Alec Baldwin and Kim Basinger, and Ellen DeGeneres and Anne Heche appeared together. Liam Neeson arrived for the event with Natasha Richardson, who later died in 2009.

Jake Gyllenhaal stars in the new thriller 'Source Code' and he dished to us on promoting a disaster movie after one of the greatest natural disasters the world has ever seen just occurred in Japan.

"It's incredibly timely now, just in the wake of so many things going on in the world," said Gyllenhaal, who has friends living in Japan. "It's a weird irony to be publicizing a movie in the middle of a situation like this."

'Source Code' follows Colter Stevens (Gyllenhaal), a soldier who finds himself sent to the past with the mission of preventing a tragedy on a commuter train in Chicago.

Gyllenhaal was the first actor attached to script and he named the story itself as the major draw to the project, saying, "The first page was, like, so tense, so engrossing and I couldn't stop... It's so fun. It's like a game of Clue."

Michelle Monaghan plays Gyllenhaal's romantic interest in the film and she described the actor as "easy to have chemistry with."

"He loves his job and I love my job and so we just enjoyed working with each other," said Monaghan.

Shooting the movie wasn't as simple for Vera Farmiga who completed her scenes separately from Gyllenhaal, but the actress worked through her hurdles and seemed proud of the final results, saying, "The film will make you philosophize."

'Source Code' steamrolls into theaters April 1.

Sharon Osbourne and the big news about Prince William and Kate Middleton's royal wedding!

Then, the "Dancing with the Stars" backstory before tonight's big premiere!

And on Tuesday, we're on a wild Rio adventure as the biggest Hollywood stars invade Brazil! Next "Insider"!

Hip-hop star Romeo admits it, "Dancing with the Stars" pro Chelsie Hightower is kicking his ass.

"She's more than kicking," he tells "The Insider" correspondent Christina McLarty. "She's kicking, stomping, jumping, but it's good. It just shows kids that you can do something different. This is definitely out of the box for me."

Romeo's approach to learning his dance moves, "I'm kind of treating this as learning a new sport." However, this "Dancing" contestant is not above stripping for votes! "Ladies, listen, I will take off my shirt if you vote for me and Chelsie."

The rapper, who started out in the hip-hop game when he was still in elementary school under the name Lil' Romeo, says Justin Bieber is in his corner. "A lot of people don't know but he's one of my little homeboys. I give him a lot of information about the business and a lot of inspirational words because I was in that position once."

Family day at the French Quarter!

Brad Pitt and Angelina Jolie took all the kids out for a walk through New Orleans, the town they call home. Sons Maddox, 9, and Pax, 7, daughters Zahara, 6, and Shiloh, 4, and twins, Knox and Vivienne, 2, were all in tow for the Sunday stroll.

During the course of the walk, the famous family stopped off at a deli near their home to pick up a few groceries.

Hit rewind and take a ride back to this day in history six years ago -- March 19, 2005 -- when then-Illinois Senator Barack Obama and his wife Michelle made an appearance at the NAACP Image Awards.

The current U.S. President was honored that year with the Chairman's Award, and he said, "It's obviously terrific to be honored this way but ultimately what matters is what the folks back home think, and so, you know, I'm greatly honored by the NAACP award, I probably wouldn't have come out were it not the NAACP, but ultimately my work is to make sure that I'm representing the people of Illinois as effectively as I can."

Despite having retired from the ring, heavyweight boxing legend Mike Tyson isn't playing golf in his free time, instead he's still training. But surprisingly instead of working in the ring, he's been busy training racing pigeons.

In a new interview with the former champ, Tyson talks about his upcoming Animal Planet show "Taking on Tyson" which follows him as he trains his birds for competitive racing.

A typical pigeon race involves having the birds travel a certain distance, Tyson says sometimes up to 1000 miles depending on the breed, and tracking how long each bird takes to return home.

Raising pigeons since he was nine years old living in Brooklyn, NY, Tyson says, "This is something I adore doing. This is the sport I am deeply involved in, emotionally involved in."

Tyson also relates how raising pigeons gave him his initial interest in becoming a fighter. "I happened to have an ordeal when an older guy took one of my birds," Tyson says, "He took the head off and threw the bird at me. He just totally humiliated me. I just decided to fight that day."

Even though pigeon racing and boxing seem like completely different sports, Tyson thinks otherwise. "It's like training for a fight actually. You have to prepare the bird every morning for the 20, 70 mile flight. Let them go, time them coming back. Like a fight. This is every day," Tyson says.

"Taking on Tyson" airs on Animal Planet on Sundays at 8PM ET/PT

Has Charlie Sheen lost his mind, or does he know exactly what he's doing? TLC is taking a behind-the-scenes look at the star's epic meltdown in "Charlie Sheen: On the Brink," in which his porn star ex-girlfriend says, "I don't know that Charlie."

"I have nothing negative to say about our relationship, about him as a man," says Ginger Lynn Allen an adult film star who dated Charlie in the early '90s. "The things that are in the media today, I try really hard to not watch, to not pay attention. I don't know that Charlie."

Ginger recalls Charlie to be "probably the most romantic man that I've ever dated," and recounts how they went to rehab together when they were an item.

"His family did feel that there was a need, and when he and I spoke about it and discussed it, I said, 'You know what? We can do this. Let's do it together,'" she explains. "And so we did. He went in, got sober. We went to meetings together, stayed sober together for over a year."

With Charlie's headline-making partying, has he become a bad example for addicts? Mackenzie Phillips, now sober after years of substance abuse, shares her concern.

"I know that there is someone out there in a dark room with a needle and a spoon watching Charlie on Ustream," she says. "That scares me, you know? I know what it's like to be the person in a dark room with a needle and a spoon. And this not the stuff you need to hear."

As for the situation that resulted in Charlie's young twins being taken away from him, Mackenzie says, "If you're thinking in your right mind, you wouldn't continue this type of behavior to the point where they come and take your children away in the dark."

NBC's Jeff Rossen, who spent quality time interviewing Charlie, says in the documentary, "In the time I spent with him recently, I really do believe he was clean and sober. I think his biggest challenge now, as I said to him in the interview, is sustaining that long-term. Strong people relapse. When you're an addict, you can relapse. We're all human beings. He says that he's made this decision in his head that he's not going to relapse. It's for trolls, it's for the weak."

"Charlie Sheen: On the Brink" airs Sunday night on TLC.