"Saturday Night Live" starring Justin Timberlake and host Jimmy Fallon airs on Dec. 21. Find out where to watch "Saturday Night Live" live stream online for free to catch the hilarious duo for the last "SNL" episode of 2013.

In case you can't watch Justin Timberlake and Jimmy Fallon as the "Saturday Night Live" hosts on your TV, we've found out how you can catch all the funniness online, via a live stream for free.

Click here for a live stream of NBC.

You can also watch an online free stream on NBC.com and Hulu, to watch video highlights and the full episodes after the show airs.

Jimmy Fallon was a former "Saturday Night Live" cast member, and will host the comedy show for the second time; Justin Timberlake will be musical guest for the fifth time on "SNL" this Saturday.

Justin Timberlake and Jimmy Fallon have proven to be a great comedic pair together in the past. The musician and late-night host have collaborated on four installments of "History of Rap" on Fallon's "Late Night" show, TODAY reports.

Also, their previous "SNL" performance together graced us with "The Barry Gibb Talk Show" skit, among numerous others.

Fans can't wait to see the hilarious duo together this weekend!

‏@BTRloverJames13 tweeted: "@jtimberlake @jimmyfallon Can't wait for Saturday Nigh Live next week!!!"

@winternialland wrote: "@jtimberlake @jimmyfallon FAVES I CANT WAIT"

@gudgrl7 posted on her Twitter: "@jtimberlake @jimmyfallon Can. Not. Wait. Going to be epic!!!! #SNL"

Catch Justin Timberlake and Jimmy Fallon host "Saturday Night Live" together this Saturday, Dec. 21 at 11:30 p.m. ET on NBC, for the last "SNL" episode of 2013.