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Jessica Simpson, Zack Braff

INFphoto.com

Here comes the bridesmaid!

Jessica Simpson looked stunning as she walked down the aisle with Zach Braff for her BFF CaCee Cobb's nuptials to Donald Faison Saturday in Los Angeles. 

The possibly pregnant singer and Faison's Scrubs costar served as bridesmaid and groomsman for the intimate nuptials, which were held under a tent filled with white twinkling lights.

Simpson, who has yet to confirm or deny the baby-bumpin' rumors, did her best to hide her stomach yet again, wearing a black dress as she walked arm-in-arm with Braff.

"I was the maid of honor last night for my BF @caceecobb. She was the most beautiful bride I have ever seen in my life!," Simpson tweeted Saturday morning, along with a photo of herself strategically hiding her tummy with a bouquet of flowers as she stood beside her fiancé, Eric Johnson