Kim Kardashian and Kanye West welcomed a baby girl on Saturday, June 15 but have remained mum about the exciting baby news.

Now, their celebrity friends are congratulating the pair on Twitter. See what the stars are saying:

Demi Lovato: Congratulations to my sis @KimKardashian and @kanyewest on having their first baby!!!

Bethenny Frankel: All kidding aside, congrats @kimkardashian on your baby girl. It’s the most beautiful, best thing that could happen to you. Girls rule.

Pauly D: Congrats @KimKardashian And @kanyewest On The Birth Of Your Baby Girl !!!!!

Patti Stanger: Mazel tov @KimKardashian on the birth of ur baby girl. So happy for u n ur family, including uncle @JonathanCheban ! Xo

Russell Simmons: There is no greater gift in life than a child's laughter! Congrats to Kim and Kanye..."

Maria Menounos: Congratulations @KimKardashian on your little angelxoox

Nas: Congrats to Kanye 4 the birth of his daughter today too! To my bros w/ daughters!!

Kardashian, 32, gave birth to her first child – a daughter – with boyfriend West, 36, on Saturday morning. Her due date was widely reported to be in July.

West was by Kardashian's side for the delivery, PEOPLE reports, despite a busy travel schedule leading up to the birth.

"I'm so excited we're having a girl," Kim said on a recent episode of Keeping Up with the Kardashians, when she learned the sex of her baby.

 "Who doesn't want a girl? I think they are the best. I know that's really what Kanye has always wanted – he wanted a little girl."

Tags: Kim Kardashian Kanye West