American tennis star Serena Williams on Friday gave birth to a baby girl at a clinic in Florida.

Her sister her sister Venus Williams confirmed the news and revealed that she is excited.

“I’m super excited, words can’t explain,” Venus told ESPN.

Serena revealed in April that she was pregnant, posting a selfie on Snapchat with the caption “20 weeks” and later confirming that she and fiancé Alexis Ohanian were expecting their first child.

She learned she was pregnant just days before the Australian Open began. For her 23rd Grand Slam singles title, Serena beat big sister Venus in the final.

Her coach, Patrick Mouratoglou, said in a recent interview that the plan, unless there are any complications, is for Williams to start training in November this year.