Whee! Stars on Roller Coasters and Kiddie Rides

She's tickled pink! The Singer gets ready to ride Vertical Velocity at Six Flags Great American in Chicago on Aug. 22. Seems she's quite the thrill-seeker: Perry and her pals also rode Raging Bull, Superman: Ultimate Flight and Batman: The Ride – tackling each coaster twice!

Lovebirds Chord Overstreet and Emma Roberts find themselves in a high-flying adventure August 15, enjoying a ride on the Astro Orbitor attraction at the Disneyland resort in Anaheim, Calif.

She's all ears! Kelly Osbourne slips into a pair of bedazzled pink Minnie Mouse ears to hop on the Alice in Wonderland ride with new beau Anton Lombardi during a May 21 visit to Disneyland in Anaheim, Calif.

He's all strapped in and ready to go! Jackman gears up for the Green Lantern roller coaster – the new stand-up thrill ride at Six Flags Great Adventure – while visiting the Jackson, N.J., theme park June 22.

She's going down! The Jersey Shore star takes the plunge with on-off beau Jionni LaValle while filming the reality show on July 12 in Seaside Heights, N.J.

Taking a more mellow trip is the Desperate Housewife, who joins her 4-year-old twins, Eden and Savannah, on the easygoing Sea Planes ride during a June 22 visit to the Santa Monica Pier's famed Pacific Park.

They're having a lot of fin – er, fun! Mariska Hargitay and Debra Messing share a seashell during a June 8 journey on Ariel's Undersea Adventure, a Little Mermaid-themed attraction at Disney California Adventure in Anaheim, Calif.

Hold on tight! The reality star takes the front seat during a trip on Disneyland's famed Matterhorn Bobsleds on June 10.

Her personal life may be something of a roller coaster, but that doesn't mean the starlet can't enjoy the real thing! Lohan went for a ride with her (terrified) sister Ali and brother Mike while thrill-seeking at Magic Mountain Six Flags in Valencia, Calif., on April 21.

The Modern Family actor and beau Justin Mikita spend a sunny July 15 day on Goofy's Sky School, a new roller coaster at Disney California Adventure in Anaheim, Calif.