Beyonce leads celebrity well wishes after Serena Williams welcomes a baby girl with fiancé Alexis Ohanian

Beyonce has congratulated Serena Williams after it was reported that the tennis star had given birth to her first child.

After going into labour on Wednesday afternoon, the 35-year-old tennis star and her fiancé Alexis Ohanian are said to have welcomed a little girl on Friday.

The news was broken by WPBF-25 news producer Chris Shepherd on Twitter, with the journalist writing: "Tennis star Serena Williams gives birth to a baby girl weighing 6 pounds 13 ounces. Mom and baby doing well."

First to lead the messages of congratulations, Beyonce took to social media just hours after the happy news was announced.

The superstar singer, who welcomed her own newborn twins two months ago, shared a picture of a very pregnant Serena posing in a flowing white silk dress.

"Congratulations Serena," it simply said