Miranda Lambert, Justin Bieber and more stars attended the annual ceremony held in Tennessee on Wednesday.
The awards show is set to take place on Wednesday.
Only ET spoke with the couple after their win for Collaborative Video of the Year for their "Nobody Like You" music video.
Morris and her husband, Ryan Hurd, welcomed Hayes in March.
Maren Morris, Kane Brown and Luke Bryan will also take the stage at the Oct. 21 awards show.
Country's biggest stars were honored on Wednesday night!
ET is looking at the biggest highlights of the 55th Annual Academy of Country Music Awards!
ET takes a look at Maren Morris’ incredible year to becoming the 2020 ACM Awards’ leading lady.
Academy of Country Music CEO Damon Whiteside tells ET how the 2020 ACM Awards will look different due to COVID-19.
Miranda Lambert scored the most nods this year with seven -- including Entertainer of the Year.
Morris is in mama bear mode.
Ryan Hurd is not here for those criticizing Maren Morris' parenting skills.
Kelsea Ballerini, Maren Morris and more are hitting up social media to put Chase Rice and Chris Janson on blast.
The musicians found themselves facing serious heat from other artists and fans for their recent concerts.
