so i stumbled upon this site www.surania.com via tumblr and it's pretty great.
you can design your own swimsuit, give your exact measurements and everything and it's not even more expensive than one you'd get at Macy's or wherever!
also, www.asos.com has a fuck ton of swimsuits at many price points. including a ton of cute high waisted bottoms!
good luck to you my lovelies!!