Lauren Conrad is finally over The Hills of pregnancy and gave birth to her first child, a baby boy!

The reality TV alum and best selling author posted on Instagram, saying "He's here! We're so excited to welcome Liam James Tell into the world!"

Lauren and her husband, William Tell, welcomed their son on July 5th, but have been excited for his arrival.

Us Magazine points out that Lauren had a baby shower on May 20, where she celebrated poolside with her friends.

We can't wait for Lauren to Tell us way more details about how she's enjoying motherhood.