Amber Rose has given her newborn son an unusual name.

The 29-year-old model and her fiance Wiz Khalifa welcomed their first child together into the world on Thursday (21.02.13) and have named him Sebastian Taylor Thomaz.

Wiz, 25, couldn't contain his excitement at becoming a father and took to Twitter to share the couple's good news.

He posted: ''Happy Birthday Sebastian ''The Bash'' Taylor Thomaz!. Everyone welcome this perfect young man into the world. (sic)''

Amber sparked speculation she would give birth this week after announcing to her followers that she would not be on the social-networking site until their baby had arrived, saying she needed to ''meditate'' and prepare for what was to come.

She wrote: ''Hey Rosebuds & Rosestuds Muva won't be back on twitter until Wizbud is born I need 2 meditate & focus on our Lil boy Luv u talk soon - Muva (sic).''

The blonde beauty previously shared she wanted her boyfriend to be the first person to touch their baby and was planning a natural birth with no pain-relief medication.

She recently said: ''I don't want no medication. We take home birthing classes to teach us how to do it, and we're gonna have our midwife, and when the baby's head comes out, he's gonna be Dr. Wiz. He's gonna be the first person to touch the child. No doctors, no gloves.''