Plus, The Weeknd announces a tour and find out if Nick Jonas is a boxer or briefs man.

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■ Demi Lovato celebrated her 23rd birthday today (Aug. 20) by taking selfies with her newly erected wax figure from Madame Tussauds in Hollywood on Thursday, because that’s how everyone does it.

■ The Weeknd announced he’s going on tour! Where and when he’ll perform remains unknown.

■ Nick Jonas wears just his underwear when he’s at home. “In my ­apartment by myself, it’s usually just me in my underwear,” he said. (For the record, he prefers boxer briefs.) [Billboard]

■ Adam Lambert’s next The Original High single is “Another Lonely Night.” [Warner Music SA]

■ Rihanna and Nicki Minaj both passed on Diplo’s “Lean On” before handing it over to MØ, which was a “a blessing in disguise.” Diplo said, “[MØ] sounds better than anybody was going to sound on that record. All we want to do is make the records feel like classics, even though they’re feeling progressive and strange to a normal ear.”

■ Carly Rae Jepsen performed “Run Away With Me” on The Tonight Show Starring Jimmy Fallon:

■ Demi Lovato is not getting married any time soon. “I’m literally turning 23 this week,” Lovato tells E! News. “There’s no rush. We’ve been together so long [that] there’s no rush.”

■ And finally, Taylor Swift, Bruno Mars, Selena Gomez and Kendrick Lamar will perform at the VMA’s come August 31. [HollwoodLife]

Did we miss anything?