The 2017 NCAA tournament is officially here.

With the brackets now set, those teams who punched their tickets can finally celebrate. 

Take a look out some of the best reactions from this season's Selection Show. 

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Northwestern made the NCAA tournament for the first time in school history. It's fair to say, Wildcat fans were pretty pumped. Northwestern, a No. 8 seed, will play Vanderbilt on Thursday in Salt Lake City, Utah. 

Award-winning actress Julia Louis-Dreyfus also got in on the celebration. Louis-Dreyfus' son, Charlie Hall, is a sophomore on the team.

Speaking of Northwestern's competition, Vanderbilt became the first 15-loss team to earn an-at-large bid. 

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Gonzaga earned a No. 1 seed for the first time since the 2012-13 season after the Bulldogs finished 32-1.

The Tar Heels, who fell to in the ACC tournament semifinal to Duke, clinched the No. 1 seed in the South. This year marks North Carolina's 48th appearance in the NCAA tournament. 

After winning the Mountain West tournament title, Nevada earned an automatic spot in the tournament. This is Nevada’s seventh appearance in the NCAA tournament in program history and first since 2007.

Minnesota went 24-6 under head coach Richard Pitino this season, earning the Golden Gophers the No. 5 seed in the South. They face Middle Tennessee on Thursday in Milwaukee.

Here are some more reactions from Sunday: