The Insider.com

Cameron Diaz's super-short haircut debuted to mixed reviews in January, and now Cameron is admitting she too wasn't thrilled at first with the drastic change.

• May 02, 2012Two Looks, One Star
• May 02, 2012TV Stars' Fun & Funky Fashion
• May 01, 2012Diane Keaton's Perfect Plaid Manicure
• May 01, 2012Harper Beckham Offered Modeling Gig
• May 01, 2012J.Lo's Slithery Style
• April 30, 2012Trend Spotting: Sheer, Black Polka Dots!

"I just burst into tears and started crying, and I felt so vulnerable," she recently recalled on The Tonight Show with Jay Leno. "There was a little misunderstanding ... I said, 'Oh I just want a little bit off' … and it went from here to here," she explained, gesturing to two very different hair lengths. "For a woman to all of a sudden have no hair, oh my god."

Related: Cameron Diaz's Hair -- Hot or Heinous?

But if Cameron felt bad, you can imagine how her hairstylist felt -- who also happened to be her good friend.

"I felt really bad, she felt really bad, she started crying, I started crying, a couple of other people started crying. ... [but] I ended up writing her a few emails after, the next couple days, assuring her I wasn't going to kill her," she joked.

Video: A-Rod Talks Cameron Diaz

And that's why friends don't let friends cut each other's hair.