Lee Hyori showed the world she could be sexy and elegant in her two new music videos "Bad Girls" and "Miss Korea."

Yet, according to boyfriend Lee Sang Soon, when the show is over and the cameras are turned off, Lee Hyori rarely puts effort into being anything other than herself.

"She doesn't like changing clothes and when she wears makeup, I think, 'Who is this, sitting next to me?'" Lee Hiyori's boyfriend Lee Sang Soon said in an interview filmed for the "2Hyori Show."

The singer's comeback show, which aired on South Korean music channel Mnet on Wednesday, featured Lee Hiyori in a dazzling array of outfits, making it difficult to imagine K-pop's reigning queen is a slob.

"We put a lot of effort into presenting a variety of performances that shows the mood of each of Lee Hyori's songs for viewers," An So Yoen, producer of the "2Hyori Show," told CJ E&M enewsWorld on Wednesday.

"Lee Hyori prepared a number of looks to bring her songs to life on stage and you'll be able to see what makes her Korea's top fashionista."

The singer's boyfriend, who may disagree with the Korea's top fashionista title, also reflected on the way the singer has changed over the years in the special.

"Ten years ago, she used to say that men would fall for her in just '10 Minutes,'" Lee Sang Soon said, in a reference to his girlfriend's song.

"But now, after just ten minutes, she falls for the men."

Slob or not, reviewers have been lining up to praise Lee Hyori's new video for the song "Bad Girls," which was written by Norway's Music Design.

The website Popdust called the clip, directed by Cha Eun taek, a strong candidate for "the best K-pop video of the year (besides Psy, of course)."

And celebrity blogger Perez Hilton has gone bananas for "Bad Girls."

"Lee Hyori is often referred to as South Korea's Beyonce and we understand why," Hilton wrote on Wednesday.

"Her new video Bad Girls is catchy, empowering to women, and just 16 tons of fun. Like Matt Bomer with bird flu, this song is both beautiful and infectious...it's true what they say, once you K-Pop you just can't stop!"

And with the release of her fifth album "Monochrome" on Tuesday, the world is poised for whatever Lee Hiyori has in store for us.

Watch the music video for the Lee Hiyori song "Bad Girls" RIGHT HERE