Ellie Goulding felt like a "rock star for a night" when she supported Katy Perry.

The British songstress joined Katy as her opening act for the final North American leg of the superstar's California Dreams Tour.

Ellie was thrilled to be a part of such a big production.

"It's really nice to hear my songs in a stadium when they perhaps wouldn't be at this point," she smiled in an interview with MTV News. "It's not often that I hear my songs so epically big and loud. I can pretend to be a rock star for a night!"

Ellie admitted to being anxious ahead of performing at the large venues. However, the star says her fears were soon put to rest when she got up on stage.

"I genuinely had nightmares of just finishing a song and it being like [awkward clap]," she laughed. "But actually they were really up for it! Any time I moved or rocked out, they'd all cheer. It was a really warm reaction. When I went out and was wandering around, loads of people came up and wanted pictures and stuff."

Ellie admires Katy. The 24-year-old who performed at the royal wedding earlier this year says the American songstress always puts on an impressive performance.

"I watched Katy's show and was just like, 'Oh my goodness,'" she gushed. "I was just blown away by everything."

Ellie remains humble about her growing success. She can't wait to continue fulfilling her dreams as a recording artist.

"I feel like I keep getting to play these amazing places [like] Madison Square Garden," she said. "I feel like if something happened to me tomorrow, God forbid, I can say that I've played these incredible venues, and as a musician, I've been able to fulfill the most incredible things. I feel like I'm still not at my peak yet. I feel like there's still a long way to go from here as a musician."