Donald Faison and Cacee Cobb are expecting their second child! Credit: Jon Kopaloff/FilmMagic

Aw! Jessica Simpson's BFF CaCee Cobb is pregnant again! Cobb announced the happy news herself via Instagram on Tuesday, Oct. 21, with an adorable photo of her 14-month-old son Rocco.

"I'm a big brother!!" Cobb wrote on top of a photo of her firstborn with a bow tie and balloons.

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A photo posted by CaCee Cobb (@caceecobb) on Oct 10, 2014 at 1:31pm PDT

The 36-year-old second-time mom-to-be has already proven she's a pro at being pregnant. In a throwback post, Cobb shared: "#tbt to last year at Comicon, 9 months pregnant supporting my nerd husband til 3am. STANDING and SOBER til 3am. If that ain't love then I don't know what is."

Donald Faison and Cobb said "I do" in Zach Braff's backyard in December 2012. This will be the second child for the happy couple.