Tan lines? Turn on, or Turn off?

I spent the last few weeks in Florida tanning, so now I have tan lines. But I have school pics soon, and I wanna show everyone when I get back how tan I am. I'm planning on wearing a low top. But then the lines show. They're dark, obviouse lines. Bikini lines BTW. Turn on? Turn off? Why? Ideas to make my tan look nicer? Etc.