You can try every line in the world, but honestly in my experience nothing works better and more consistently than actually reading their profile and either negging something about it (or a pic they have or something), or make some sort of connection based on the info in their profile (like if they like all the same movies as you...or music...or what have you). Commenting on her and her profile A) shows you took the time to read what she had to say B) gives them the impression you aren't just using a recycled line that could be used on any girl...this way your comment(s) are specific to her, so C) you can build comfortability if you guys have something in common to talk about, which D) can lead to easier transitions into spicier conversations since they're comfortable with you
But hey, that's only one way to go about it. I'm sure there are plenty of one liners and openers that consistently get responses as well.