07/27/2012 02:27 pm ET

The Week's Best Style Moments: Tracee Ellis Ross, Eve And Rachel Roy (PHOTOS)

This week's style standouts have mastered the art of sexy sophistication.

One of our favorite fashionistas, Tracee Ellis Ross, showed some skin in a simple yet sultry one-shoulder LBD while attending HollyRod Foundation’s 14th Annual DesignCare event in Malibu last Saturday. It was the perfect frock to dance the night away at the event thrown by Holly Robinson Peete and husband Rodney Peete to raise money for Parkinson’s disease and Autism research.

Eve was also out and about lending her superstar status to an amazing cause this week. The rapper/actress celebrated "Together To End AIDS: An Evening To Benefit amfAR and GBCHealth" at John F. Kennedy Center for the Performing Arts in Washington, D.C. Her long, peach hued shirtdress was spiced up with a v-neck revealing her famous cat claw tattoos and a high slit (made even higher with a few undone buttons) showing of her gorgeous gams.

But our favorite style moment of the week comes courtesy of fashion designer Rachel Roy. Her head-turning style has graced many of our best-dressed lists, but it was the sassy black Roland Mouret Jumpsuit the 38-year-old fashionista wore to the New York premiere of "The Campaign" that really made our jaws drop. The midriff and cleaveage-baring cutout design could have skewed too sexy, but Rachel reeled it in with a tailored blazer from her signature collection.

Check out those ladies and the rest of this week's fashion-forward folks in the slideshow below.

The Week's Best Style Moments