Perez Hilton — Justin Bieber may not know who pop singer Shawn Mendes is, but there's one fellow Canadian star he apparently does know — Bryan Adams. Bieber shared the stage with the '80s rocker at a Universal Music event in Berlin on Tuesday, and the two did an ... more info

Perez Hilton — If you can't keep track of all these YouTube and Vine stars blowing up these days, you're not the only one! Shawn Mendes is skyrocketing up the charts right now with his single Stitches, and many people are starting to learn his name! One of those pe... more info

E! Online — Either Justin Bieber really has no idea who Shawn Mendes is, or he just delivered a healthy dose of pop star shade à la Mariah Carey. The "What Do You Mean?"... more info

Mercury News, California — Bieber brushes on Ellen DeGeneres' attempt to get him to talk about his ex-girlfriend. more info

TMZ — Andre Berto's throwing a fresh jab at Floyd Mayweather Jr., and also getting a little too candid about his pal Chris Brown's lethal hands.  more info

TMZ — ON TODAY'S SHOW Kim Zolziak's Airport Freak Out Violence Erupts at a Mike Epps' Comedy Show Matt Damon's Diversity Comments Cause an Uproar Justin Bieber Gets Denied at a Huge Fight SKYPE US TMZTVSHOW TWEET US Tweet to @TMZLIVE more info

Perez Hilton — His new single may be called What Do You Mean, but there's no misunderstanding here! In an episode of The Ellen Show premiering on Tuesday, Justin Bieber chatted it up with Ellen DeGeneres about his new music, his shirtless pics on Instagram, and mos... more info

Perez Hilton — This is amazing! Selena Gomez may be going through her own Revival musically, but she's going retro for Wonderland magazine! The actress channels her inner flower child for the glossy's 10th anniversary issue, dressed in a beautiful Miu Miu frock. [ ... more info

Perez Hilton — Aren't they lovely?! From Justin Bieber to Mariah Carey, there sure have been some epic car singing seshes, but this one might take the cake! Last night on The Late Late Show, James Corden hit the road again with Stevie Wonder for some Carpool Karaok... more info

MTV.co.uk News — And we’ll be hearing all about it in her next album, Revival. more info