Tattoo Recommendations?

Alright so my girlfriend wants a tattoo that'll look really y and we've already picked designs and all but she wants to know which three locations to put a tattoo would be the hottest and iest place to put it so far she is getting a tramp stamp but she wants two more and we can't decide which location to get it. So far we've looked at hips, lower stomach, ankle, and bikini line even though I can't tell the difference between bikini line, hips, and lower stomach but overall I need recommendations for two locations that would be y and hot to put a tattoo but we also have to put into consideration if she got a hip tattoo and got pregnant could she be affected? Overall my three questions are what two y and hot spots to but a tattoo and would pregnancy affect lower stomach/hip/bikini line tattoos and what is the difference between a lower stomach/hip/bikini line tattoo. Thanks for your help.