Australian model/actress Megan Gale is a first-time mother after giving birth to a son.

The brunette beauty gave birth to River Alan Thomas Hampson, her first child with her sports star boyfriend Shaun Hampson, on Tuesday (13May14) and she shared the news in a post on her Instagram.com page.

She writes, "Our precious little 3.87kg (8.5 pound) man came into the world... (on) the 13th of May 2014 at 4.47pm. Needless to say Shaun and I are completely smitten with him and we're beyond blessed to have such a healthy baby... We love you little man and are So thrilled to be your parents."

Gale later posted a picture of her baby son revealing his name, explaining, "Rivers is my Mum's maiden name, Alan after my Dad, Thomas for Shaun's Dad and the last name just like his Daddy's."