Kelly Clarkson celebrated her 35th birthday at Universal Studios in Florida on Monday with family and friends.
"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!!!"
"River Rose is loving/hating mama's birthday," she posted.