Disneyland date!

Heidi Klum and boyfriend Martin Kirsten spent a day at Disneyland Tuesday to celebrate Klum's daughter Lou's 3rd birthday. The 39-year-old mother-of-four enlisted her new man's help to party with her four kids: Leni, 8, Henry, 7, Johan, 5, and birthday cutie Lou.

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"It really is the happiest place on earth!" she tweeted with a photo of herself smiling in front of a Mickey Mouse Ferris wheel.

The Project Runway host rode a merry-go-round with her little girl, who was dressed up like an adorable princess. Klum and Kirsten wore matching outfits of black shirts and dark shades.

In September, Klum confirmed her relationship with Kristen, her former bodyguard, in an interview with Katie Couric. "I trust him with my children's life," the German-born model explained. "He's a great man . . . and we just got to know each other from a completely different side."

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Klum announced her separation with Seal in January after seven years of marriage, and filed divorce papers in April. The R&B singer, 49, told TMZ over Labor Day Weekend that he wished Klum had waited "until we separated first before deciding to fornicate with the help," but later clarified that Klum did not cheat during their marriage.

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On Wednesday, Klum kept her fun-filled week going by attending Madonna's MDNA concert -- apparently sans Kirsten -- in Los Angeles. "Wow! Madonna you mesmerized us with your voice, beauty and power!" Klum tweeted Wednesday. Other stars who attended the show were Sophia Bush, Jessica Alba, Emma Roberts and Neil Patrick Harris.

This article originally appeared on Usmagazine.com: Heidi Klum Takes Kids to Disneyland With Boyfriend Martin Kirsten