Usher, Lil Wayne Mark Justin Bieber’s Birthday

'Happy birthday, slime. You in the club,' Weezy tells Biebs in birthday video compiled by MTV News.

When it’s your 18th birthday, you’ll probably get well wishes from mom, dad, and, if you’re lucky, your teenage crush. But when you’re Justin Bieber, you get shouts from Usher, Lil Wayne and Sean Kingston. Be jealous!

On Thursday (March 1), the Biebs turned 18 years old, and his most famous friends hooked up with MTV News to celebrate Bieber’s birthday . “I hope that you are around all of your loved ones and having a good time. This is from big bro, from the heart,” Usher said in a video piece compiled by MTV News for the Biebs.

The Confessions singer initially signed Justin along with his manager Scooter Braun, and he has since become a mentor to the pop star. So of course the 33-year-old Usher had to impart some b-day wisdom on his young homey. “Eighteen will give you an opportunity to do a little bit, not all, so we got a few more years before you can go all the way,” he said, acknowledging the three years until JB turns 21 and is allowed to legally drink in the U.S. “Maybe I might even be able to sneak you into a club. Anyway dawg, happy birthday. I love you.”

Comedian Kevin Hart isn’t buying all of Justin’s birthday hype, though. “Whatever Justin Bieber is supposed to be doing at 18, he was doing at 15,” he joked after sending his well wish.

Platinum hitmakers RedFoo, B.o.B, Sean Kingston and Flo Rida all helped MTV News celebrate the occasion. Even Lil Wayne, who was with Bieber in the studio in February, sent a special message. “Happy Birthday, slime, the big one-eight. You in the club, slime,” Weezy said, standing beside Young Money’s Lil Chuckee.

As far as birthday presents go, it’s anybody’s guess what his buddies will actually get Bieber. But Robin Thicke bypassed tradition and instead hit up the “Never Say Never” singer for a loan. “Send me some money, Justin. You got way too much,” he said, laughing.

But what do you get the young man who has everything? Sometimes all it takes is a few kind words. “Thank you to all the people that made the video,” Bieber told MTV News. “It really brought a smile to my face.”

Leave your own birthday message for Justin Bieber in our comments section!

Happy 18th birthday, Justin Bieber! Now that we’ve counted down the superstar’s 18 greatest moments , stick with MTV News as we celebrate the milestone all day.

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