Donald Faison, CaCee Cobb expecting baby No. 2

Donald Faison and CaCee Cobb are having another baby, and they announced the happy news with a little help from their son, Rocco.

The celebrity duo shared a snapshot on Tuesday featuring their 14-month-old clutching superimposed balloons, flaunting the revelatory message on his T-shirt: "I'm a big brother!!"

A photo posted by Donald Faison (@donald_aison) on Oct 10, 2014 at 1:21pm PDT

Faison, 40, who has appeared in "Clueless," "Scrubs" and "The Exes" and who lends his voice to the animated series "Robot Chicken," wed Cobb in pal Zach Braff's backyard in December 2012.

Braff costarred with Faison in "Scrubs" and the film "Wish I Was Here," which Braff also directed. He's Rocco's godfather, according to People. Cobb is singer Jessica Simpson's best friend and former assistant and was pregnant while the fashion designer was pregnant with her son Ace.

"Roc you will be the best big brother ever! Keep 'em comin' @caceecobb and @donald_faison !!" Simpson tweeted upon the couple's announcement.

Faison, for one, has definitely kept 'em coming: It'll be the second child for Cobb and the sixth child for the actor, who, in addition to Rocco, has three kids with ex-wife Lisa Askey and a son from a previous relationship, according to Us Weekly.

There's no word yet on a due date.

In July, Cobb, 36, shared a Throwback Thursday post on Instagram teasing to her past experience at San Diego's Comic-Con International as this year's annual convention loomed.

"#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," she wrote, sharing a snapshot of the couple embracing her growing belly.

#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.

A photo posted by CaCee Cobb (@caceecobb) on Jul 7, 2014 at 7:42pm PDT

In August, the pair celebrated Rocco's first birthday, reveling on Instagram with another sweet pic of their son.

"Happy Birthday to this handsome boy!" Cobb wrote. "I don't know what I did to deserve such wonderfulness, but not a day goes by that I am not grateful for this little being. I love you Rocco! I can't believe it's been a whole year!

Happy Birthday to this handsome boy! I don't know what I did to deserve such wonderfulness, but not a day goes by that I am not grateful for this little being. I love you Rocco! I can't believe it's been a whole year!

A photo posted by CaCee Cobb (@caceecobb) on Aug 8, 2014 at 5:02pm PDT

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