In this photo provided by PictureGroup, Katy Perry kicks off...

In this photo provided by PictureGroup, Katy Perry kicks off the North American leg of her "California Dreams Tour 2011." (June 7, 2011) Credit: AP Photo

Katy Perry isn't big on subtlety.

She fought with mimes for a brownie during "UR So Gay." She formed a chorus line with an Elvis impersonator, a slot machine and showgirls for "Waking Up in Vegas." And for her version of Whitney Houston's "I Wanna Dance With Somebody," she did The Robot with a giant purple cat.

There's so much going on in her two-hour show that she can almost be forgiven for hitting a few bum notes here and there. After all, she really is singing and not lip-synching. (She did get caught pretend-playing the recorder on her version of Jay-Z's "Big Pimpin'.")

If nothing else, Perry's show Friday night at Nassau Coliseum was a full-fledged spectacle of cotton-candy clouds and candy-cane accessories.

In her world, everything is overstuffed and candy-colored, from the filmed introductions to each part of the set to the songs themselves. "I Kissed a Girl" gets a jazzy opening and a big rock guitar solo. "Peacock" has a feather-aided dance number. And she even did acoustic versions of Rebecca Black's "Friday" and Willow Smith's "Whip My Hair."

It's a mix of humor and music that works well for her, as her four straight No. 1 smashes prove. Perry has so many hits that she sometimes tosses them off with little fanfare, as with the recent "E.T." and the great "Hot N Cold," which she oddly makes about costume changes. Then she adds dramatic acrobatics to the lesser track "Pearl" and a trip over the crowd on a stage covered in pink cotton candy.

Opener Robyn showed that upbeat doesn't have to be over-the-top with a 40-minute set of clever, touching dance music, capped by a gorgeous version of "Hang With Me."

But it's Perry's larger-than-life musical cartoons that really translated best.

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