If you have a plus size labia, it still works. I actually think it helps hold it into place. The flicking tongue feels absolutely amazing, and when you thrust it moves up and down slightly making for an amazing orgasm. I love that it has 3 separate buttons for the different parts of the vibrator. It stimulates your clit, inside your pussy, and inside your partners pussy. I already love the feeling of wearing a strap on, but this takes it to a whole new level. As you use it, it does go slightly out of position and mostly stayed at the bottom of my clit, which could be a good thing because if I felt that tongue the whole time I would start convulsing even more than I already did and I would squirt multiple times.