Supernatural pin-up boy Jared Padalecki is feeling a little snug in the pants.
The 25-year-old Hollywood actor arrived eight hours late in the country without his bags which had been misplaced en route, along with all of his clothes.
As a result his first stop when he arrived in Sydney was to pick up some new underpants, but for a guy who spends most of his time battling the paranormal on the Network Ten hit show Supernatural as Sam Winchester, buying grundies proved quite a challenge.
"I had to go buy clean underwear with the crazy Australian sizes that I didn't understand," he told AAP in Sydney.
"Sixteen? 18? I have no idea what size I am - we do small, medium and large.
"They're far too small - they're like a thong. It's embarrassing."
But the hoards of teenage girls who queued up to see Padalecki at the Supanova Pop Culture Expo in Sydney didn't mind.
Hundreds of fans of the show waited in line for hours to see Padalecki and grab an autograph or a photo.
Padalecki, who made a name for himself playing teen heartthrob Dean on the hit show the Gilmore Girls, says meeting his fans is one of the biggest perks of the job.
"It's exciting to do stuff like this - people are coming to see you and take pictures, and give you compliments and take photos with you and want your autograph - you definitely feel cool after doing it," Padalecki joked.
"We put in so many hours on this show that it's nice to meet people face-to-face as opposed to seeing ratings - a meaningless number on an internet site somewhere."
Padalecki filmed Disney movie A Ring of Endless Light in Australia in 2002 and then a remake of House of Wax with Paris Hilton in 2005.
He is one of many stars who have turned up in Sydney to greet fans at the Supanova Expo, including Jewel Staite from Firefly and Stargate: Atlantis, Kandyse McClure from Battlestar Galactica, and the stars of Gladiators and Heroes.
The Expo, which runs all weekend at Sydney Olympic Park, celebrates all things imaginary from Star Wars to Superman, Halo to Harry Potter and Transformers to Tomb Raider.
