Bikini on flat chested girl?

i am flat chested and i am going togo to a waterpark with my family and i am going to buy a bikini this one http://www.target.com/Girls-Swimwear-Xhilaration-Halter-Bikini/dp/B003LM7SH2/ref=sc_qi_detailbutton oh and i am 5"3 and tall?