Amber Rose and Wiz Khalifa are having a baby boy. The model, who is expecting her first child with her fiance, accidentally revealed the gender of the baby in a tweet thanking one of her friends for purchasing an all-in-one sleepsuit decorated with a picture of Guns N' Roses guitarist Slash for their baby.

She wrote: ''My friend Maria bought our Lil Boy this Slash onesie..... Oops did I say Lil Boy??? ;-)''

It is not known whether 29-year-old Amber - who is in her second trimester - genuinely meant to reveal whether she is having a boy or a girl, but earlier this month the Black and Yellow hitmaker refused to say whether the couple are having a son or a daughter.

He said: ''I do know, but then [Amber] told us not to say yet. We'll wait until she's ready.''

Amber recently admitted she is planning to have an all-natural water birth without the help of medical aid, and the couple confirmed they are keen to resume planning their wedding after their son is born.

She said: ''I'm so ready. I've decided that I'm going to have an all-natural water birth. No medicine. I want those bragging rights! The next time Wiz has a stomach ache or anything, I'll say, 'I popped out a baby all-natural.' ''

Wiz added: ''It makes more sense for the baby to be in the wedding than for her to be pregnant. Some people, they rush and do it, but it works both ways.''