Mark Zuckerberg Is An Uncle! Sister Randi Zuckerberg Gives Birth To Asher

Mogulite reports that the Facebook CEO's sister, Randi Zuckerberg, gave birth yesterday at the Lucile Packard Children's Hospital at Stanford, making the one and only Mark Zuckerberg an uncle.

Internet personality Julia Allison tweeted early this morning, "Happy birth (space) day to little Asher, @RandiZuckerberg & @BrentTworetsky‘s new baby boy, entering this world 3 weeks early today!" Mogulite notes that Randi Zuckerberg, Mark's older sister, is Facebook's marketing director, and married college sweetheart, Brent Tworetzksy, in 2008.

Mogulite apparently caught Zuckerberg checking into the hospital (on Facebook, of course) on Sunday afternoon with the message, "Meeting Asher and drinking champagne" with his girlfriend Priscilla Chan, but we're not currently seeing the update on his profile.