Video: MTV's Nikki Glaser and Sara Schaefer Dish on Justin Timberlake's New Song and Justin Bieber Growing Up

OK! hung out with comedians Nikki Glaser and Sara Schaefer, the hosts of the brand new talk show, MTV’s Nikki and Sara Live, airing Tuesday nights at 11 p.m. ET.

We got them talking about the two Justins: Timberlake and Bieber. The girls are known for their JT passion; plus he's gearing up for a big performance at the Grammys this weekend, while JB is prepping to host and perform on Saturday Night Live this weekend

They discuss their reactions to “Suit & Tie” and when Bieber will have his big "moment".

Which Justin are you more excited to see perform this weekend? Tell us in the comments below or on Twitter @OKMagazine and be sure to tune into Nikki and Sara Live on MTV tonight!

MORE VIDEOS YOU HAVE TO SEE:

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* VIDEO: YOU WILL NOT BELIEVE WHAT ASA FROM 'SHAHS OF SUNSET' IS CARRYING AROUND IN HER PURSE!