Tyra Banks announces she's a new mom

Former supermodel Tyra Banks is a new mom.

The businesswoman known for her "America's Top Model" show revealed her new baby boy Wednesday evening in an Instagram post.

Banks' long-time boyfriend, photographer Erik Asla, is the child's father.

The little boy -- named York Banks Asla -- was carried by a surrogate mother.

The announcement came when Banks posted a picture of a newborn hat to her followers on Instagram.

This is the couple's first child.