Kelly Clarkson celebrated her 35th birthday at Universal Studios in Florida on Monday with family and friends.

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The trip to Orlando was a surprise girls getaway she learned about during a scavenger hunt with friends on Friday.

"Woke up this morning to a birthday scavenger hunt that ended with an anagram!! Best surprise ever!" she posted on Instagram.

The "Since U Been Gone" singer shared a photo on Instagram Monday from her trip -- a selfie with her 1-year-old son Remington.

She captioned the post, "Thank you @universalorlando for the most magical birthday!!! It was the greatest surprise to have my entire group adorned in Harry Potter gear!!!"

Clarkson is also mother to 2-year-old daughter River Rose, who she shared a picture of on Twitter Monday.

"River Rose is loving/hating mama's birthday," she posted.