Bruno Mars is this week's cover story in Rolling Stone magazine.

+ Bruno Mars is on the cover of Rolling Stone. He reveals his No. 1 song "When I Was Your Man" was about a time when he thought he and his girlfriend, Jessica Caban, might break up. "You're bringing up all these emotions again," he said. "It's just like bleeding!" The issue hits stands on Friday. (Rolling Stone)

+ Watch Beyoncé perform her new song "Grown Woman" live in Paris, France. While the fan video's a bit shaky and blown out, it's a full version of the song that Beyoncé first previewed in a recent Pepsi commercial. (Spin)

+ Kelly Rowland and P!nk are among the singers to make People's "Most Beautiful" 2013 list. Watch behind-the-scenes footage of Kelly's photo shoot, which shows the stunning, fresh-faced Kelly without makeup. "I feel very comfortable in my skin and very comfortable to share it with you guys," she says. (Rap-Up)

+ If you missed the epic premiere of Ke$ha's "My Crazy Beautiful Life," the first episode is right here to watch on demand. Also check out MTV News' recap. (MTV News)

+ Fall Out Boy's Save Rock And Roll bowed at No. 1 on the Billboard 200 chart. It's their first to debut at the top spot since 2007's Infinity On High. "It really is like getting to do-over what should've been one of the best times in my life; last time I was arrogant. This time, I know how insanely lucky we are," Patrick Stump told MTV News. (MTV News)

Photo credit: Rolling Stone/Theo Wenner