Last night we hit up the three year anniversary cocktail party in honor of colorist-to-the-stars Rita Hazan's Manhattan salon, which is a mecca of cool amidst an otherwise stuffy neighborhood (5th Avenue and 56th street).

"It's a younger, more fashion-oriented salon," Hazan told me.

Hazan -- a regular on The Oprah Show -- is one of (and this is no exaggeration) the most in-demand hair colorists out there, and her celebrity client list is about 120 people long. Her handiwork has been seen on Jessica Biel, Heidi Klum, and Gwyneth Paltrow, just to name a few.

Hazan's full service salon caters to every beauty need -- hair cut/color, styling, waxing, facials, nails and spray tans. "It's a one stop shop," she said. "And everyone who works here is amazing. I'm a stickler for that."

I couldn't pass up the opportunity to ask Hazan what's new in hair color. "Subtle color is in," she explained. "Stripey and streaky is out -- and no roots showing. The look now is sophisticated and sexy."

You hear that, Kate Moss?