Clarkson was surprised by close friends with a scavenger hunt game that ended in a girls trip for the singer, which included her sister and her mother, reported People magazine.
Taking to Instagram, the "Stronger" hitmaker shared pictures from her 35th birthday bash.
"Woke up this morning to a birthday scavenger hunt that ended with an anagram!! Best surprise ever! #morninghair #whereisthegirlstrip #sweaty."
In another post she wrote, "Thank you @universalorlando for the most magical birthday!!! It was the greatest surprise to have my entire group adorned in Harry Potter gear!!!"