We're not sure how Justin Bieber heard of 'Saved by the Bell.' We're not sure if he's seen it (maybe those reruns on TBS at 8 a.m.)?

But regardless, Justin paid tribute to the T.V. show at the MuchMusic awards in Toronto on June 19 by wearing a $24 Kelly Kapowski (played by Tiffani Thiessen) T-shirt from Urban Outiftters.

The Biebs must have the same Kapowski crush Zack Morris had, but we're wondering where it came from. 'Saved by the Bell' was on T.V. between 1989 and 1993. Bieber was born in 1994.

Looks like the Kapowski crush transcends time and generartions. Good luck Biebs. Tiffani's been married since 2005...when you were 11.