As a onetime Disney star, she grew up in the shadow of Mickey Mouse.

And Demi Lovato was back in the Disney groove on Sunday, and couldn't have been happier about it.

Squealing with delight, the 25-year-old didn't hold back as she the California Screamin' roller coaster at Disney's California Adventure with a gal pal.

Delighted! Demi Lovato seemed to be looking for a thrill on Sunday, riding the California Screamin' roller coaster at Disney's California Adventure with a gal pal

Demi - who formerly starred on the Disney Channel show Sonny With A Chance - held hands with her friend on the ride.

The actress had tied a pink and black flannel shirt around her waist, teaming a simple white T-shirt with ripped black jeans she'd slightly rolled up.

She accessorized with sunglasses, huge hoop earrings, a chic pendant and a bracelet, as well as a watch and ring.

Her friend with the Louis Vuitton bag looked as cheery as she did, especially once they'd got in their California Screamin' carriage.

Having a laugh: The 25-year-old actress and singer - who once starred on the Disney Channel show Sonny With A Chance - held hands with her friend that day while off the ride

Former child star Demi has worked a few times for Disney Channel, not only on Sonny With A Chance - which ran from 2009 to 2011 - but also in TV movies.

Camp Rock, which first aired in 2008 and co-starred the Jonas Brothers, was followed by Camp Rock 2: The Final Jam in 2010.

Though Sonny With A Chance and the Camp Rock movies comprise Demi's most famous work for Disney, she'd also featured on the short show As The Bell Rings, which ran from 2007 until 2009.

Simply chic! Demi had tied a pink and black flannel shirt around her waist, teaming a simple white T-shirt with ripped black jeans she'd slightly rolled up

So glitzy! She'd accessorized with sunglasses, huge hoop earrings, a chic pendant and a bracelet, as well as a watch and ring

Last year, while she and Nick Jonas were touring together, they'd given a joint interview to Billboard in which she'd discussed her life as a Disney star.

'We joked around that it was Disney High, except we all were shooting shows and really overworking. I joke that I sometimes have PTSD after leaving the channel, because if my schedule starts to get too busy, I rebel and I get b****y...'.

During that interview, she also recalled that 'when you're on set, you work like an adult. I always wanted to be the next Shirley Temple, to be the youngest person to ever win a Grammy and an Oscar. It didn't turn out that way. I don't regret it, but I probably won't allow my kids to get into the industry unless it's on their terms.'

The old days! Former child star Demi has worked a few times for Disney Channel, not only on Sonny With A Chance - which ran from 2009 to 2011 - but also in TV movies