Miley Cyrus Takes Over Disneyland For Sweet 16 Birthday Party/ Concert

Demi Lovato gives pricey gift from Tiffany & Co., denies beef between her and Cyrus.

doesn't actually turn 16 until November 23, but that didn't stop her from celebrating with her own super-sized "sweet 16" party at Disneyland in Anaheim, California, on Sunday, which included a four-song concert from the birthday girl. A bevy of celebrities turned out to wish the Disney superstar a happy 16th, including , Steve Carell, Cindy Crawford, Jennie Garth and Jennifer Love Hewitt, along with "Hannah Montana" co-stars Cody Linley and Emily Osment and Tyra Banks (who played onstage hostess).

Miley's rumored boyfriend, Justin Gaston, joined Cyrus' dad, Billy Ray, and older sister Brandi onstage for a version of Billy's hit, "Achy Breaky Heart," according to

Rumored frenemie also made an appearance and cleared the air again about her relationship with the birthday girl, revealing to MTV News that she got Miley a necklace from Tiffany & Co. "If we weren't cool, I definitely wouldn't have gotten her a nice gift," she told MTV News. "I pinky promise!"

Much like Demi, ringmaster Banks had kind words for the teen queen. "This is absolutely amazing for the world's most beautiful, perfect little girl. She's so pure," she said.

Meanwhile, daddy Billy Ray was on hand to wish his little girl a happy birthday. "Just show her a lot of love. We're gonna have a lot of laughs tonight," he said. He also had an unusual birthday wish for her: "Buckle up!"

Miley revealed to us that despite her father's warnings to buckle up, she didn't get a car — at least, she hasn't yet — but Maltipoo puppy (i.e. a cross between a Maltese and a poodle). She said it's the best birthday present she got. "He's precious," she told MTV News.

She added that she couldn't think of a better place to celebrate her birthday. "[I can't wait to] ride rides, duh! And celebrating with my friends," she said. "We're just excited!"

More than 5,000 guests (many of whom paid $250) joined in the celebration at Disneyland, which was shut down for the day (except, of course, the 11th annual Gay Days Anaheim, which was held at Disneyland's sister theme park, California Adventure, at the same time as Miley's party).

When asked what he got Miley for her birthday, "American Idol" runner-up David Archuleta said, "I don't know what you'd be able to get her! She looks like she's doing pretty well."