Beyoncé posts stunning photo to congratulate new mum Serena

How thoughtful.

As news spread that Serena Williams gave birth to a baby girl last night, her friends and fans have been rushing to congratulate her. Beyoncé was one of the first celebs to share her well wishes as she took to Instagram to show off a gorgeous picture of the tennis ace. Regramming a picture of Serena in a long, flowing gown, Bey simply wrote on the pic, "Congratulations Serena!," instead of writing a caption.

A post shared by Beyoncé (@beyonce) on Sep 1, 2017 at 1:24pm PDT

The picture was from a pregnancy shoot Serena did a couple of weeks ago. She wasn't the only one to mark the occasion though, as Karlie Kloss, Ciara, fellow tennis player Ana Ivanovic and her coach rushed to Twitter to wish her well.

Congratulations @SerenaWilliams and @alexisohanian on your beautiful baby girl! ...Auntie Karlie is ready to babysit ??

— Karlie Kloss (@karliekloss) September 2, 2017

Congratulations to my girl @SerenaWilliams & Alex Ohanian on your new baby girl! So happy for you guys! ❤️

— Ciara (@ciara) September 1, 2017

Congratulations @serenawilliams - so happy for you!!! #newmom

— Ana Ivanovic (@AnaIvanovic) September 2, 2017

Congratulations @SerenaWilliams for your baby girl. I am so happy for you and I feel your emotion. Recover well & enjoy without limitation.

— PATRICKMOURATOGLOU (@pmouratoglou) September 1, 2017