Pop Culture Roundup: Katy Perry and Justin Trudeau's Ski Trip, Backstreet Boys' Pizza Hut Collaboration, Avicii's Streaming Milestone, and Charli XCX's Movie Announcement

Katy Perry and former Canadian prime minister Justin Trudeau are still going strong as seen in a carousel of photos shared by the singer. The images capture their romantic moments on the ski slopes and during dinner. Meanwhile, Backstreet Boys' Nick Carter and Howie Dorough have partnered with Pizza Hut for a Valentine's Day promotion featuring "The Shape of My Heart-Shaped pizza," inspired by one of the band's hits. The duo also stars in a YouTube video debating the "heart hands" gesture. Avicii's hit song "Wake Me Up," featuring vocals by Aloe Blacc, has surpassed 3 billion streams on Spotify and over 7 billion streams across all platforms. Aloe, who co-wrote the song with Avicii and Mike Einziger of Incubus, expresses pride in the song's enduring popularity. Charli XCX has revealed the release date of her upcoming movie "Erupcja," in which she stars and co-wrote. The film follows a British woman's journey to Warsaw with her boyfriend, leading to a reconnection with her former girlfriend.