On The Ellen DeGeneres Show Friday, surprised actress Jennifer Aniston, who celebrates her 40th birthday today, with a red velvet cake on the set of her once popular series Friends.

Jennifer had been dreading her landmark birthday after experiencing a upsetting incident with her hair late last year. The He’s Just Not That Into You actress says she “flipped out” and cried when she found a gray hair.

“I found a really long grey hair and it kind of flipped me out. It’s not my first but it’s the fact that it was so long. I was like, ‘Oh that’s been there. How many others are there, and what does that mean?’ It actually brought me to tears slightly.”