They may not be as big as One Direction, but 5 Seconds of Summer caused quite a commotion when they arrived at Los Angeles International Airport on Monday evening!

The boys greeted a handful of very excited young ladies, many of whom wanted selfies and hugs, and members Ashton Irwin, Luke Hemmings, Calum Hood and Michael Clifford were happy to oblige. Speaking of ladies, rumor has it Hemmings is dating none other than Hailey Baldwin, though the model took to her Twitter account to deny the reports on Friday evening.

"I never went on a date with Luke from 5 seconds of summer," she tweeted. "So if everyone wants to chill that'd be dope." Baldwin then deleted the tweet, and after receiving a number of responses, she later wrote, "Again, I just wanna bake muffins. I give up lmfao."

The two grabbed dinner at Cipriani in New York City last month, but a source tells E! News that they're "just good friends," adding, "Hailey has done a few events and projects with them. There's nothing romantic is going on at this time. They had a great friendly dinner!"