[Images: Matt Baron/BEI/Peter Brooker/Rex Features - click to enlarge]

Chanel opened the doors of their brand new concept boutique in Robertson Boulevard, Los Angeles last night and the stars - mostly clad in black - came out to play. Rachel Bilson, Katy Perry, Amber Valletta, Leighton Meester and Michelle Trachtenberg kept things très noir except for a few pops of colour in the form of Rachel's clutch, Katy's floral headpiece and Michelle's metallic grey skirt.

What we want to know is: who is the best in black?