Wondering who does your favorite celebrity’s hair color? Unfortunately, stars and their hairstylists stay so tight-lipped about their style secrets that it’s hard to get a straight answer. (I’m looking to make a followup post about the professionals who cut and style celebrity hair as well, since while in LA I got to visit the fabulous Warren Tricomi salon where Lauren Conrad gets her hair done.) Luckily, I’ve got the scoop for you ladies! Here are a few celebs and the stylists they trust with their hair:

• Katherine Heigl swears by Frank Friscioni at the Oscar Blandi Salon in NYC for her warm blonde haircolor.
• Debra Messing and Blake Lively both get their color perfect with Rona O’Connor at Lukaro in Beverly Hills.
• Jennifer Lopez uses colorist David Gonzalez at Oribe in Miami.
• Ashley Olsen keeps her locks lusciously ombre blonde with Lorri Goddard Clark at the Neil George Salon in Beverly Hills. Lorri also colors the hair of a host of other starlets, including Drew Barrymore, Raquel Welch, Michelle Pfeiffer, Kirsten Dunst, and Reese Witherspoon.

Sources: Fafarazzi.com, InStyle, Lorrigoddardclark.com
Image source: Random Chic