Amber Rose and Wiz Khalifa have been tight lipped about their pregnancy. However, Rose decided to break the silence and tweet the sex of the baby.

"My friend Maria bought our Lil Boy this Slash onesie..... Oops did I say Lil Boy??? ;-)," Amber posted to Twitter while sending an Instagram flick of the white onesie featuring the Guns & Roses guitarist.

Prior to the revelation, Wiz told MTV News that while he knew the sex of the baby, he was waiting until his other half was ready to go public. Excited, he also said the couple was going through the tedious task of picking out names.

"We're working on it. You know how difficult that is," he said with a chuckle. "But it's all good, though. I let her have her way all the time; that's my baby."

Amber and Wiz haven't announced a due date for the baby, but they are ecstatically preparing for their bundle of joy. The couple recently appeared on the cover of XXL, and plan to marry. Amber also mentioned in the interview that she wants to have a natural birth.

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(Photo: Christopher Polk/Getty Images)