f(x)'s Krystal is receiving tons of compliments for her perfect abs. A post on an online community board revealed a set of pictures, titled 'Krystal's 11 abs'. The pictures are from f(x)'s performance in MBC "Show! Music Core" on July 2nd. On the day of the show, Krystal danced to "Hot Summer" wearing hotpants and a skintight T-shirt. As she raised her arms up, her short shirt revealed her enviable stomach, which drew a hot response from both netizens and fans alike. Netizens gushed, "The hot commodity these days is Krystal", "Her abs are a work of art. She's tall and thin, she has the world in her hands", "She's definitely one of the Top 5 idols", and "The more I see her, the more I like her". My six-pack? They're in the fridge. Source & Photos: Newsen via Nate