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Kristin Cavallari

Miguel/FameFlynet Pictures

Just a few days after giving birth to her first child, new mom Kristin Cavallari couldn't help but to gush about her baby boy.

"Being a mom is the most incredible feeling," the former Hills star tweeted Saturday. "I am so in love with this little boy!"

The 25-year-old reality star and her fiancé Jay Cutler welcomed their little one Wednesday. 

"We are thrilled to welcome Camden Jack Cutler into the world," Cavallari tweeted that day. "He was born this morning weighing 7lbs 9oz. Everyone is doing great!"