Amber Rose and Wiz Khalifa welcome 'perfect' first child into the world... Sebastian 'The Bash' Taylor Thomaz

Amber Rose has given birth to a baby boy.

The 29-year-old model and her fiance Wiz Khalifa welcomed their 'perfect' first child Sebastian Taylor Thomaz into the world on Thursday.

Wiz, 25, tweeted: 'Happy Birthday Sebastian "The Bash" Taylor Thomaz! Everyone welcome this perfect young man into the world.'

Amber then added her own message: 'Happy Birthday to our baby boy Sebastian "The Bash" Taylor Thomaz! I'm so happy u guys I fell in love all over again! :-)'

Stars were quick to add their congratulations. 

Rihanna, who herself turns 25 today, wrote: 'Congratulations to my fam @mistercap and @muvarosebud !!! Welcome baby Bash! You're born in an exquisite month #babypisces.'

Rapper Wiz had earlier posted a picture of himself in doctor's scrubs, including a shower cap and a face mask.

Sharing the good news: The rapper announced the news via Twitter on Thursday

Happy birthday! Amber Rose told her fans 'I fell in love all over again'

Auspicious day: It is also pop star Rihanna's birthday on February 21, and she offered her congratulations to her friends

Daddy time: The rapper tweeted a picture of himself in scrubs on Thursday saying 'Daddy time'. His fiancee gave birth to a baby boy soon after