Amber Rose says her newborn son is ''unbelievable''.

The 29-year-old model and her fiance Wiz Khalifa welcomed their ''perfect'' first child Sebastian Taylor Thomaz into the world last Thursday (21.02.13) and Amber revealed she is adjusting to motherhood extremely well.

Writing on her Twitter on Tuesday (26.02.13), she said: ''Man breastfeeding is awesome. It kinda hurts though. But the bonding with my baby is unbelievable. So worth it.''

Shortly after the birth of their first child, who they have nicknamed 'The Bash', Amber revealed that she was immediately obsessed with him.

She tweeted: ''We can't stop staring at Sebastian. He's beautiful. He's the perfect mixture between me and Wiz. He has Wiz's Lips and my round head. LOL.''

Amber and Wiz, 25, got engaged last March.

The model, who initially became famous for dating Kanye West, previously revealed they had postponed their wedding until after their son arrived.

She said: ''Being pregnant, I'm tired a lot. So to have a wedding and planning it all out and the reception - I just don't want to be sleeping when everybody's partying at our wedding.''