Fans are already super excited for the upcoming 'Christmas special' episode of 'Running Man' with guests including iKON's Bobby, B.I, AOA's Seolhyun and more. Plus, it's going to be a nostalgic 'X Man' special.

Now some shots of Seolhyun on set during her solo dance time have been released, and she looks adorable with her heart signs.

The episode will feature some of the original 'X Man' members, including Lee Jong Su, Shinhwa's Andy, Chaeyeon, Lee Ji Hyun and Stephanie. The new 2015 'X Man' members are iKON's Bobby and B.I, AOA's Seolhyun and comedian Kim Ji Min.

As soon as Seolhyun arrived, the male guests were said to not be able to hide their joy, and their hearts completely melted with her 'heart dance'.

If you'll remember, 'X Man' had a segment where both male and female guests had to dance, in order to impress the opposite gender before couple selection time. That's what Seolhyun is in the middle of doing in these released photos.

She was said to have surprised everyone when she directly approached one specific guy. Did she approach one of the iKON members? Or did she keep it safe and choose one of the older guests?

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We'll have to tune in on December 20 to find out who Seolhyun ends up with!