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+ Justin Bieber will be making his acting debut on the season premiere of "CSI: Crime Scene Investigation." He will play a "troubled teen." (Ryan Seacrest)

+ Taylor Swift has opened up about "Mine," her debut single and video from Speak Now. (MTV News)

+ Check out some photos of Rihanna performing live in Los Angeles on her Last Girl On Earth Tour. (Idolator)

+ Smashing Pumpkins frontman Billy Corgan apparently blacked out and collapsed on stage last week during a show. (LimeLife)

+ Leona Lewis is working on her new album with the likes of Ne-Yo, David Guetta and Dallas Austin. (ThatGrapeJuice)

Tags Billy Corgan, David Guetta, justin bieber, Leona Lewis, Ne-Yo, Rihanna, Smashing Pumpkins, Taylor Swift

Some celebs go to great lengths to avoid being seen by paparazzi. They cover their face, speed off in waiting cars, even go so far as to wear disguises! But not Mary J. Blige. Nope, the queen of R&B was snapped walking around the Big Apple yesterday, attempting to blend into her surroundings by wearing a bit of camouflage.

While I often look out the window, gazing at New York City, and think to myself, 'It's a jungle out there," I don't really mean it's a jungle. But MJB is taking the cliche a little more literally, donning her finest designer army green. Gotta admit, she makes it work; especially with the gold rope chain.

Hopefully Mary J. was in New York preparing for her rumored fall tour in support of last year's lovely Stronger With Each Tear album.

Tags Mary J. Blige, Star Spotting

I can honestly not recall what I did on my 18th birthday, but I am fairly sure it did not involve going on the "Fox & Friends" show. But that's what Selena Gomez did on her 18th birthday, which was today.

The "Naturally" singer and "Ramona And Beezus" actress was on hand to promote her various endeavors. She's been kind of running this town (this town being NYC) this week, dropping by Letterman, Jimmy Fallon, "The View" and probably a couple of other places where she wasn't on camera being interviewed.

Anyway, this is all by way of saying "Happy Birthday" to one of our favorite gals! Let's check out her "Round & Round" video below.

Tags Selena Gomez, Star Spotting, video

(Credit: Lady Gaga & Nick Knight/ SHOWstudio)

Via Vulture, check out the latest and by far weirdest (if, strangely, the most functional) piece of Lady Gaga-approved memorabilia: the "Armitage Shanks," a Lady Gaga-signed urinal.

The above urinal is showing at London gallery SHOWstudio. Gaga herself stopped by to pose with this piece of bathroom art (see here), which she has inscribed with the profane, if esoteric quip: "I'm not f***ing Duchamp, but I love pissing with you."

It's a reference to Marcel Duchamp, the Dadaist artist who made his own famed piece of urinal art called "The Fountain." That Lady Gaga, always mixing high and low culture, with a dash of commercialism.

+ How much would you pay for Gaga's urinal?

Tags Lady Gaga

Yesterday, was a big Katy Perry day. Not only did the California gurl reveal her Teenage Dream album artwork (spoiler: she's NAKED!), but she also announced that she would be getting into the perfume game with her own fragrance, Purr.

Perry, who told WWD that she was "a product whore," explained her decision to create her own fragrance: "I saw a lot of my peers getting into this world, and, as with my music, I thought I could bring my touch to the category and make it competitive.”

We here at Buzzworthy are competitive, too. We like to guess what things will smell like before we actually get a chance to sniff them. So here are our five best-educated guesses as to what Katy Perry's Purr fragrance is gonna smell like.

1. Cotton Candy

Katy Perry definitely has cotton candy on the brain. Just check out her Teenage Dream artwork, above, which features her relaxed in a bed of the stuff. Perhaps Purr will smell like this sugary, fluffy treat.

2. Russell Brand

For that flirtatious, funny, unwashed hair smell.

3. Snoop Dogg

The "California Gurls" guest rapper probably has a rather, um, intoxicating smell (we're thinking of the world's most popular plant, you know, the one people use for medicinal purposes only) and maybe a light air of gin and juice.

4. Cherry Chapstick

For when you want to smell like you just kissed a girl.

5. Cats

It is called Purr after all. Citrus undertone is optional.

Purr is due out in 2011. Teenage Dream is out August 24. Check out "I Kissed A Girl" below.

Tags Katy Perry, Russell Brand, Snoop Dogg, video

After the hyper stylized dominatrix disco of "Not Myself Tonight," Christina Aguilera gets back to basics with her new video for "You Lost Me," from her most recent album, Bionic.

When I say back to basics, I really mean it. The Anthony Mandler-directed video opens in a pretty trifling apartment (no sheets on the bed!), as Aguilera sadly wanders around, recalling a lost love. Even when the action (calling it action is a stretch) moves to what honestly looks like the Bat Cave, Mandler's camera lingers only on Aguilera, focusing on her performance over everything else.

The solo concept really fits the song, which is a gorgeous ballad. After all the flak Aguilera caught over her dance-floor diva look and whether it did or didn't borrow too liberally from Lady Gaga, "You Lost Me," finds the singer doing what she does best: letting her gifted, unparalleled voice soar over a delicate, despairing song.

Check out Christina Aguilera's new "You Lost Me" video. And watch her perform the song live on "VH1 Storytellers."

Tags Christina Aguilera, Lady Gaga, video

+ Expect nudity and glitter from Ke$ha's upcoming "raw and real" video for "Take It Off." (MTV News)

+ Miley Cyrus is apparently "furious" that "Gossip Girl" star and Pretty Reckless singer Taylor Momsen has been trashing her in interviews. (TheFabLife)

+ As hair days go, Britney Spears had a pretty bad one yesterday. (PopEater)

+ Check out stills from the set of Eminem and Rihanna's "Love The Way You Lie" video (Rap-Up)

+ Foxy Brown has been arrested for violating an order of protection filed by her neighbor in Brooklyn. (E!)

Tags Britney Spears, Eminem, Foxy Brown, Ke$ha, Miley Cyrus, Rihanna, taylor momsen

Looks like somebody has a case of the Mondays, albeit on a Wednesday. Here we have Joe Jonas, looking like a) he left a little bit of his youth inside of whatever gym he was at earlier or b) he is the world's most athletic goth. Either way, he is seen here leaving Tender Greens yesterday in Los Angeles.

This is probably one of those moments when being a celebrity kind of sucks eggs. You're Joe Jonas. You've just been pumping some serious iron, working your quads, getting your chi where it needs to be. And now you, despite not looking your best, you're gonna hit Tender Greens for, let's say, red and green butter lettuce with tarragon dressing. Nothing fancy!

But here's a paparazzi, sticking his camera in your face to immortalize this rather pedestrian moment. It's hard out here for a Jonas brother. It's enough to make a dude paranoid.

Tags Joe Jonas, Jonas Brothers, Star Spotting, video

Holy shout-out, Buzzworthy!

In the brand-new video for "Pumpkin Pie," the third super-infectious single off his debut album, Welcome to the Blacklist Club, Evan Taubenfeld is looking for love, and spreading it too, on Twitter. And he sent some our way!

After striking out with Jayme, Katie and, ahem, your mom, Evan Taubenfeld's ready to settle down and go to sleep with the same girl every night. So he turns to the interwebs to find the girl who can tweet her way into his heart. And lo and behold he stumbles upon @MTVBuzzworthy!

Unfortunately, we're already spoken for, Evan, but we love you anyway!

+ Watch Evan Taubenfeld name-drop MTV Buzzworthy and his other famous friends in his new video, "Pumpkin Pie."

Tags Avril Lavigne, Evan Taubenfeld, video

Now that we've had a chance to watch the full video for the T.I./Keri Hilson collabo "Got Your Back," we can finally piece together the sweeping romantic narrative contained inside.

At its heart, "Got Your Back" is about a couple sticking it out and staying together even in the face of life's biggest obstacles -- in this case, jail. After being convicted of an unspecified crime and serving about oh 40 seconds in the clink, the video's Romeo (portrayed by an actor; T.I. looks much more dapper in a vest and aviators than in an orange jumpsuit) returns home to his patient lady, with flowers in hand. Love is worth the wait, ya'll.

Also of note: a Scooby-Doo-style rotating wall decorated with his-and-hers wallpaper. On one side, T.I. is spitting verses; on the other, Hilson croons the refrain. There's probably a good metaphor here about there being two sides to every relationship and the cyclical nature of love. Or it's just a really cool effect.

Plus we get to see who's got T.I.'s back in real life, thanks to a cute cameo by his wifey Tameka “Tiny” Cottle at the end. Awwww.

Tags Keri Hilson, T.I., video