Casey Reinhardt is a first-time mother — and the Laguna Beach alum is celebrating her new title with an Instagram photo featuring her and her husband, Sean Brown’s baby daughter, Kensington!

The couple tied the knot in February and announced their pregnancy in April. Sean first confirmed on Friday that the MTV star gave birth on Aug. 16.

“My precious baby girl Kensington Kelly Brown has arrived!” Casey captioned the image. “We are beyond in love with our sweet girl and I absolutely love being a mommy! I feel so overwhelmed with joy every time I look at her. This is what pure happiness feels like.”

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“I love you so much @seanmbrown1. Thank you for giving me the best gift I could ever imagine! Life is so amazing and we are so blessed.”

Congratulations to the growing family!

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