Halsey

Joe Biden and Kamala Harris also marked the occasion.

Britney Spears' beau Sam Asghari hooked her up with a stunning floral display and gifts.

The singer opened up about body image post-giving birth in an intimate, honest message to the public.

No words, just an image.

"If you're trying to make a perfect pop album, you're just trying to make 'Teenage Dream' again."

Baby Ender is destined for creative genius with this room.

The pop star gave birth to her first child on July 14.

From on-stage baby bump reveals to record-breaking Instagram announcements, these celebrity pregnancies made major headlines.

See the sweet maternity photos!

From Grimes to Lady Gaga, K-pop to nu-metal...