HELP!!! I need bikinis that fit!

Okay so, I am a relatively small girl but am more on the busty side. I have so much trouble finding bikinis that fit as I typically need xs or small bottoms and I am a 32ddd or 34dd. So this becomes quite the predicament when trying to find a bikini that fits nicely. I obviously can only buy separates and need good support! If anyone has any suggestions on where to find good but also cute bikinis(because I'm a college girl and I definitely don't want to be wearing the same swimsuit as my mother), please let me know!!! Thanks!