Justin Bieber's Party Pals

Kim Kardashian! Katy Perry! See the stars sure to wish the singer a very happy birthday when he turns 17 on March 1!

KOBE BRYANT

Talk about having a Sweet 16! Just days before his birthday last year, Bieber met L.A. Laker Bryant – the NBA's reigning MVP. At the same time, the Canadian hockey team scored Olympic gold. "Lakers win. Canada wins in overtime. And I get to meet this guy. KOBE! Blessed birthday," the Stratford, Ont., native Tweeted.