Model Amber Rose and rapper Wiz Khalifa have welcomed their first child together.

Rose, who announced her pregnancy at last year's MTV Video Music Awards, gave birth to a baby boy, who they named Sebastian Taylor Thomaz, yesterday (February 21).

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

The rapper revealed last year that Rose had suffered a miscarriage prior to becoming pregnant with Sebastian.

The couple became engaged last year.