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"Scrubs" actor Donald Faison, 39, welcomed a son with wife CaCee Cobb, 36, on Thursday and like many celebs, took to Twitter to let the world know.

"Yesterday @caceecobb and I welcomed the most amazing little boy into our lives! Oh Happy Day!!" he tweeted on Friday. He followed up his excitement with a "So in love" tweet Saturday.

Check Out Photos from CaCee Cobb and Donald Faison's Wedding

Jessica Simpson's best friend Cobb seconded Faison's sentiments with a post of her own, "The happiest day of my life."

Cobb isn't the only one in the family with famous friends like Simpson. Faison's close buddy and co-star on "Scrubs" for almost a decade Zach Braff responded to the birth saying, "Thank you @caceecobb. @donald_faison and I will take it from here."

Related: Zach Braff Helps 'Scrubs' Superfan Propose

Looks like someone doesn't want to be left out! Congrats CaCee and Donald!

Cobb and Faison married in December 2012 and announced the pregnancy a month later. This is Cobb's first child and Faison's fifth.