Jaws must have dropped at the sight of Soyu's sexy S-line in the May issue of 'Arena Homme Plus'!

As if to remind people she was still a part of the feisty SISTAR after a long time promoting "Some" with JungGiGo, she dressed herself in black outfits that revealed just enough to give her an air of mature sexiness usually reserved for someone older than her age!

Check out the pictures in the May issue of 'Arena Homme Plus.'

SEE ALSO: SISTAR's Soyu reveals she'd consider dating a man 20 years older than her