For her 36th birthday, Christina Aguilera refused to act her age. ?I wanted to let grown-ups experience the joy of being a kid again,? the mom of Max, 8, and Summer, 2, tells Us. On December 10, eight days ahead of her big day, the Voice alum and her fianc?, Matthew Rutler, 31, transformed their $10 million Beverly Hills spread into a pink Christmas Candyland with confection-festooned trees, inflatable slides and a Hello Kitty bounce house. The singer shares the photos exclusively with Us.

Santa Style
The Grammy winner greeted friends in Mrs. Claus?inspired velvet, then slipped into a black lace one-piece.

Sweet Treats
Planner Corrie Mendes of C Event Studio filled displays with doughnuts, bulk candy bars and saltwater taffy.

Jumpin? Jumpin?
The Hello Kitty bounce house was a hit with Summer, says Aguilera: ?I?m pretty sure she thought it was for her!?

A Candy Confection
For the night?s main dessert, confetti cake hid under lollipop-studded icing.

A Pretty Performance
Real Housewives fan Aguilera asked Erika Jayne (a.k.a. Beverly Hills? Erika Girardi, center) to perform ?Pretty Mess? with backup dancers.

Name Game
Bethenny Frankel, using a custom straw, raves to Us, ?It was the nicest birthday I?ve ever been to, with zero pretense ? just like Christina.?

Game Break
Aguilera equipped video-game stations with Skylanders, Max?s favorite.
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