User blog comment:Miskos3/Fairy Tail Anime Returns in April/@comment-4449950-20140205113006/@comment-5426822-20140205152124

I looked back into last GMG chapters and the bottoms really just look like billowy Natsu-like pants with its ends not being gathered together near the ankles. Look at the last panel on the left. I think it's just how their depicted in the visuals that makes them seem like a skirt.