Reese blew everyone away with her three-tone strapless number and strappy black stilettos.
We are always in awe that she manages to carry off that flawless with minimal effort look, with her chic and simple make-up and perfect blonde tresses.
Courteney also went for a strapless number, opting for a flowy below-the-knee layered dress.
She added sparkle to her outfit with her dainty necklace and glitzy bracelet, and we are seriously loving her black platform heels.
Last week, we told you that Black Eyed Peas frontwoman Fergie had recently joined the Avon team, so it was only natural that she would make an appearance at the event.
And what an appearance! She looked classy and stylish in a beige minidress, complete with feather detail on the shoulders and hem, and a waist-defining black belt to show off her perfect curves.
Her tousled updo adds a hint of youthfulness - and shows off those gorgeous dazzling earrings.
The black tights and shoes add that final flavour of sophistication - perfect for an Avon spokeswoman.
By Maria Pierides