Katy Perry and Britney Spears are appearing on a CD together but it's not the latest "Now" compilation.
Rather, the pop singers have written songs on Selena Gomez & the Scene's new album, "When the Sun Goes Down."
"I did have a lot of artists that I was very lucky enough to have songs written by and it's a good, uplifting album," Miss Gomez, star of Disney's "Wizards of Waverly Place," said of her third CD. "It's really fun and very dance-y and I hope people like it."
Miss Spears co-wrote the dance song "Whiplash," while Miss Perry co-penned "That's More Like It." Singer Priscilla Renea - who co-wrote Rihanna's "California King Bed" and Cheryl Cole's "Promise This" - co-wrote three songs on Miss Gomez's album, including the lead single and Top 40 hit "Who Says." The disc also has a writing credit and guest appearance from British singer Pixie Lott.
"I think it's a powerful CD," Miss Gomez said in a recent interview.
The 18-year-old's first two albums have reached gold status. The new record - which has three songs co-penned by Miss Gomez - will be released Tuesday.
Days after her disc's release, Miss Gomez will get another girl-power boost with the Friday release of her new movie, "Monte Carlo," which also stars Leighton Meester of "Gossip Girl" and was co-produced by Nicole Kidman.
Miss Gomez said leaving Los Angeles to shoot the film in Paris and Budapest was "so refreshing." But the grueling promotional tour that has followed - maybe not so much.
The nationwide campaign, including a string of mall appearances, recently was interrupted when Miss Gomez was hospitalized in Los Angeles for exhaustion, malnourishment and low iron.
The singer-actress, who is dating teen pop star Justin Bieber, said she enjoys having friends "in the business" and others who are not.
"Personally for me, I feel like it's good to have a balance of both," she said. "I have people in my life that are in the business and then I have friends who aren't in the business and family, so it's nice to kind of keep that.
"You want people that obviously understand what you're going through and then you also want people that's like, 'Let's not talk about [movie] sets or press or any of that, let's just talk about normal things.' "
Yet the entertainer, whose "Wizards of Waverly Place" is ending its fourth and final season on Disney, said she has noticed that her life - and the people around her - are changing.
"Your life definitely changes a little bit and you kind of think people's motives change toward you," she said. "Just got to be careful - that's all."