Too Cute: Selena Gomez Wears Justin Bieber's Purple Plaid Shirt in London

Selena Gomez must be missing her man! The starlet was spotted in London Friday wearing Justin Bieber's purple plaid shirt while holding a fluffy white teddy bear. Awww.

The singers were together a few weeks ago for Selena's Monte Carlo movie premiere in NYC, and during the trip he was spotted wearing the purple button down. It's clearly found a new home since.

The two parted ways after their early July reunion and Selena's been super busy promoting her movie and new album in the UK since then, while Justin's been all over the place too. He recently partied with Usher to celebrate the anniversary of "One Time," and has been showing up at malls to advertise his new fragrance, Someday. This weekend, he's camping! 

Robert Pattinson Calls Justin Bieber Out on a Lie

You might think Robert Pattinson and Justin Bieber are brothers in much-beloved hair, but it appears it just isn't so.

Bieber recently told UK tabloid The People that he and Pattinson bonded at an industry party over their famous locks, saying, "One day Robert Pattinson came up to me at a party and said, 'For whatever reason, people love our hair and it's always a great ice-breaker with girls.'"

"He is like, 'Hey, my name's Robert. Want to touch my hair?' I thought he was joking, but it really works."

Now Pattinson, who is hard at work promoting his upcoming film Water for Elephants, says that encounter never happened. He told MTV (via EOnline) on Friday, "I've never met this guy. I saw that as well. I was like, 'You're really famous, man—what are you doing? You don't need to use me to make up stories!"

Maybe Bieber was just embellishing for the sake of avoiding talking about his private life. Which is something you'd think Pattinson would understand, given the constant speculation about his relationship with his Twilight co-star Kristen Stewart.

Selena Gomez Looking Pretty Grown-Up at The David Letterman Studio

Selena Gomez waved to fans as she arrived at a taping of The Late Show with David Letterman on Monday. We wonder if she gushes about beau Justin Bieber...or maybe she'll stay totally mum.

She recently said about Bieb's crazed fines who have said many-a-hurtful things about Gomez: "It's hard. It hurts, it really does. I don't feel like I'm doing anything wrong. I've been best friends with him for a very long time. It does hurt my feelings a lot but I try not to focus on it. I have a strong family and great fans."

But she's no stranger to getting extremely excited over a teeny bopper boy. When she was younger, she cooed over then-hearthrob Jesse McCartney, and was also very jealous of his girlfriend, Katie Cassidy.

"I loved Jesse McCartney. I was obsessed with him. He dated Katie Cassidy when he was 16 or 17. I hated her, absolutely hated her. I was mortified that he was with Katie and I wanted to be with him. He was my screen-saver!" she said.The crazy thing pre-teens will do for puppy love.

Nicole Richie Throws Harlow a Star-Studded Third Birthday Bash

The cutest, most stylish celebrity kids in Hollywood all gathered at the Tree House Social Club to celebrate Nicole Richie's daughter's birthday yesterday. Little Harlow is turning 3 this week, and she had plenty of pals to wish her the happiest of birthdays.

Spotted at the fiesta: Kourtney Kardashian and her little guy Mason; Ellen Pompeo, her hubby Chris Ivery, and their extremely well-dressed daughter Stella (she had on kicks cool enough to make Justin Bieber proud); Jennifer Meyer and her son Otis Maguire; Gwen Stefani and her boys (also dressed to the nines); Jessica Alba and family, and more! 

The tots played at the venue, and were apparently even entertained by a guy dressed up as Buzz Lightyear! The Tree House Social Club offers a variety of party packages, and we're guessing Nicole splurged for the "Bells and Whistles Treehouse Bash," which includes a hot dog machine, popcorn machine, 2 hours of entertainment from a character, goody bags, Body Glimmer Art Tattoos, cupcakes, balloons, and whatever "add-ons" the new Mrs. Madden desired -- with a price tag of $2,500 and up.

Justin Bieber, Chris Brown Duet in the Works

Listen up, Bieber fans: The 16-year-old is teaming up with Chris Brown in early 2011! Justin used to cover Mr. Brown's hits on YouTube before he was famous, and now the superstars are joining forces.Chris tweeted the news today: "ME and @justinbieber got a BANGER/SMASH record for all the fans out there at the top of the NEW YEAR!!! 2011 #BREEZYTAKEOVER"

No word yet from the Bieb's camp, and we're not sure if the song would be for Chris or Justin's new album -- but we'll take this team-up without complaint either way!Justin's already got another high-profile collaboration in the works, too. He confirmed recently that he'll sing with country band Rascal Flatts on a track for his 2011 record. 

Hot or Not: Justin Bieber's DIY Mustache

It's safe to say that pop star  Justin Bieber is not yet capable of growing facial hair, which is perhaps why he decided to get creative with some eyeliner and draw himself a nice little 'stache outside London's La Porte Indes restaurant.

Is Justin giving us a vision of the future? And if so, will legions of shrill, screaming young women continue to throw themselves at him if he rocks a pencil mustache for the entirety of his adulthood?

Time can only tell. For the time being, tell us if you think the ultra-thin  DIY 'stache is a good look, just for kicks.

Justin Bieber's Mom Canceled His Cell Phone After an Argument

Justin Bieber loves traveling with his mom Pattie, but despite his huge career success, she still calls the shots on the road. 

He said: "Mom travels with me. We argue yes, I think every parent and son argue, but I love my mom. I think it's good she travels me, but sometimes I need a break because I'm with her 24/7 but I love her, I like being with her. 

"The other day she canceled my phone plan. We got into an argument about something stupid, and she was like, 'Give me the phone' and I was like, 'No', so she just went and canceled it." 

Justin Bieber Becomes Youngest Artist of the Year Winner at the AMAs

Justin Bieber was the big winner of the evening at the American Music Awards last night, taking home four accolades including Favorite Pop/Rock Male Artist, Favorite Album and Breakthrough Artist of the Year during the ceremony at the Nokia Theatre in Los Angeles.