'Laguna Beach' Alum Casey Reinhardt is Pregnant! See the Sweet Instagram Announcement

Getty Images

Just a month after her lavish wedding, Laguna Beach alum Casey Reinhardt has announced she and new husband, Sean Brown, are expecting their first child.

The cupcake entrepreneur made the announcement in a super sweet Instagram photo that showed off her growing baby bump.

WATCH: 'Laguna Beach' Star Casey Reinhardt Marries Sean Brown in Stunning OC Ceremony

"We are SO thrilled to announce we are having a baby!!!!" the 29-year-old mom-to-be wrote. "Life is truly so beautiful and exciting for us right now! We feel beyond blessed and so incredibly excited!"

Last month the newly married couple posted this cute Easter snap -- totally hiding the baby bump! 

Reinhardt and Brown's February wedding featured over-the-top flowers, fireworks, and even songstress Sara Bareilles as the wedding singer.

RELATED: That's So 2004! What We Learned From The First Season of 'Laguna Beach'

Check out more on the lavish wedding in the video below.