New thongs

I'm planning to order my girlfriend some new thongs, she has some but could definitely use more. She has a sexy big ass that looks amazing in thongs. Anyone have any good tips on where I can get some reasonably priced ones that aren't at the cookie cutter places like Victoria's secret? Especially ones that are higher cut and more likely to show? Also any tips on styles and sizes that are more likely to rise up good and high? I'm really trying to make her a whale-tail girl without her even knowing. I love when it is unscripted. Of course I am more than willing to share the fruits of all this effort with you all! Thanks!!