Britney Spears' Birthday Dance With Sophia Grace And Rosie Is Cuter Than Puppies [Watch]

Pint-size 'Ellen' co-hosts link up with Brit for an early birthday party between rehearsals for her Las Vegas show.

Britney Spears got nothing short of a "massive, big surprise" from talk-show host Ellen's young pals, Sophia Grace and Rosie. The two cousins stopped by Spears' Las Vegas residency rehearsals for a segment on "The Ellen DeGeneres Show," and while there, they helped celebrate the singer's upcoming 32nd birthday.

In addition to learning some of Spears' choreography — and getting the chance to show off the moves alongside Brit! — they presented the pop star with balloons and cupcakes. Spears must have been impressed with the impromptu princess-themed party because she called it "spectacular."

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During the party, Spears revealed that her wish is "to have four vacations a year." Then the adorable sisters presented the "Perfume" singer with gifts, including a tiara with a mic attached, and a fluffy, purple tutu. "Now my show will be perfect," Spears told her "two new best friends."

Britney's actual birthday is on December 2, a day before she releases her new album, Britney Jean. The studio record will be the singer's eighth and includes features from folks like T.I. and, as well as an appearance from her little sister, Jamie Lynn, on the track "Chillin' With You." (Spears was recently snapped kissing a mystery fellow on the set of her new music video for "Perfume," a solo track.)

Weeks after the album hits retailers, she'll kick off her two-year Las Vegas residency, "Piece of Me," at Planet Hollywood on December 27.

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