IU found herself standing in front of Lee Hyori's home with her luggage. Lee Hyori was surprised when the idol star showed up in front of her doorstep. "A staff member was supposed to come!" she remarked.

Hearing this, IU responded, "I'm that staff member."  Lee Hyori, laughing, blurted, "How are we supposed to let you do all the work?" But once the real business began, both Lee Hyori and her husband Lee Sang Soon seemed to get very used to calling out "Hey Jieun," as IU helped around the house taking on various tasks.

SEE ALSO: Lee Hyori stars in Slou Bed's 'Starry Night' eco-friendly mattress campaign

Meanwhile, many are looking forward to Lee Hyori's new reality series featuring the lives of the diva star and the idol singer. IU also proudly posted the teaser clip via her Instagram page, promoting the show.

'Hyori's Bed and Breakfast' is scheduled to air its first episode on June 25 at 8:30 PM KST!