The mother-of-two looked stunning at the John Varvatos 11th Annual Stuart House Benefit in West Hollywood, Calif. on Sunday, rocking a bright yellow dress and white pumps. She left her long locks down in tousled waves, opting for natural eye makeup and a light pink lip.
Yellow isn't an easy color to pull off, but Jessica, with her fair complexion and signature blonde tresses, manages to do so quite effortlessly!
The 33-year-old beauty has been raving about her diet plan with Weight Watchers, and recently said that her upcoming wedding has given her a reason to stay slim.
"Knowing that I have the wedding coming up is an incentive to stay on Weight Watchers, count my points and stay in the gym," Simpson told People. "I mean, when you see my dress, you'll know!"
We can't wait to see Jess on her big day -- what do you think of her latest look? Sound off below, and click "Launch Gallery" above to see more stars at John Varvatos' big event.