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Jamie Lynn Spears, Jamie Watson, Maddie

Chloe Rice/Disney

If you need proof that Disney World is the happiest place on Earth, just take a look at the smiling faces of Jamie Lynn Spears and her family!

The country crooner, her husband James Watson and her adorable daughter Maddie were beaming during their trip to the Magic Kingdom on Thursday. The trio even posed for a sweet pic with Minnie Mouse in front of Cinderella Castle in matching white T-shirts with mouse ears on the pockets!

The Zoey 101 star also shared a cute photo on Instagram of the 6-year-old's royal makeover after a visit to the princess salon. "Princess Maddie!! #disney2014 #thewatsons @jamiewatson985," the proud mama wrote.

The 23-year-old's older sis, Britney Spears, is also a fan of the magical theme parks!

Last month, the "Alien" singer took her boys to Disneyland for a day of adventure. "Took these two little Mouseketeers to @Disneyland today... like mama like sons ;)" she tweeted.

Britney Spears, Twitter

Twitter

The superstar mom and her sons started their day bright and early, enjoying rides on Space Mountain and Splash Mountain.

"She seemed like she was in a great mood and seemed happy that her kids were having fun," one eyewitness told E! News.

"She was in very comfy clothes with her hair in a messy bun," another source said. "She was smiling and having fun with her sons."