Mark your calendars, ladies and gentlemen! The 2017 iHeartRadio Music Awards is coming and you're invited. 

Taking place on Sunday March 5 at the Forum in Los Angeles, CA; the awards show will be one of the biggest musical celebrations of the year. Not only are some of your favorite stars scheduled to appear, but many of them are nominated in several categories, too.

That's where you come in! iHeartRadio wants your help to award some of these celebs with honors that they've worked so hard to get. How can you do this, you may be asking? You can vote for the Best Collaboration this year via social media. That's right! Using your social media accounts, hashtag #BestCollab #iHeartAwards and #SongTitle (example: Rihanna's #Work, Sia's #CheapThrills, etc.) and vote for your favs to win.

Take a look at the 2017 iHeartRadio Music Awards nominees in the Best Collaboration category below. 

Best Collaboration

Sia feat. Sean Paul - "Cheap Thrills"

The Chainsmokers feat. Halsey - "Closer"

The Chainsmokers feat. Daya - "Don't Let Me Down"

Calvin Harris feat. Rihanna - "This Is What You Came For" 

Rihanna feat. Drake - "Work"

You can also vote here. May the best man or woman win!

Photo: Getty Images