The iHeartRadio Music Awards are about to start in Los Angeles and some of the biggest names in music and reality TV are arriving … and we’ve got all the photos.

Kelsea Ballerini, Jojo Siwa and Benson Boone are some of the first arrivals … and they are all looking super fashionable … with Jojo really making a statement.

LL Cool J is tonight’s host at Hollywood’s Dolby Theater … and GloRilla is among the performers. She showed up in a skintight, black dress and blonde hair.

Music is the reason for the occasion, but this is Hollywood and reality TV is not to be ignored … so “Vanderpump Rules” stars Ariana Madix and Brittany Cartwright are among the celeb guests in attendance.

Jenny McCarthy is in the house too … and like a fine wine she just keeps getting better with age.

Green Day is nominated for three awards … Alternative Artist of the Year, Rock Artist of the Year and Alternative Song of the Year for “Dilemma” … and they look ready for an acceptance speech … we’ll see if they win.

Crazy scene on the streets of Atlanta … a bunch of men got into a huge fight in full view of security guards … and it’s all on video.

Ya gotta see the footage … it’s complete chaos outside a business as a well-dressed group of guys brawl … fists and feet are flying and whizzing all over the place.

Sources tell TMZ … the fight happened outside The Interlock in Atlanta a little after 11 PM Sunday night … with security breaking up the fight.

We’ve seen lots of fights at the Atlanta airport over the years … but now things are spilling into the streets.

Jen Affleck has once again joined the world of male stripping in Vegas … this time, with the newfound support of hubby Zac Affleck.

Check out this exclusive video of Jen joining the steamy studs on stage – dancing, smiling, and showing off her pregnant belly – as “The Secret Lives of Mormon Wives” star is whisked around in a red throne while the chiseled, chest-exposing dancers perform all around her.

This is not her first appearance at the show … in an infamously known moment in the first season, her morality was questioned by her fan-hated hubby … but it seems her Mormon man has had a change of heart.

Zac himself spent time with the mesmerizing men, and made an effort to show he is A-OK with her participating in the sensual show … as you can see, he’s even got a headset on onstage.

Since the reality couple’s last time being with the group didn’t go so well for their relationship — he told her last season that he was done with her, leading to a dramatic halt in their relationship — fans are wondering if this is a damage-control scheme.