Okay, Just got my first pack of underjams today. I'm 5'11 and 155 pounds. 32 inches around the waist, not sure about the hips, but probably very similar, or a bit smaller. I'm a guy but i got the girls large/xtra large. they fit great, though a bit lower than im used to. no pubes show over the diaper, and it feels more like a thick panty than the abena secure xplus i was wearing a moment before. definitely very different.
overall, im very pleased. for one, i can buy them at the store instead of online and the cashier assumed i had a kid or something (not that ive ever minded, and i told the cashier, who happened to be cute, that i didnt in fact have children) and theyre so discreet, i can wear one under my boxer briefs and walk around the house without weird looks. possibly best of all, theyre something like 80 cents each, which is a huge step from the 1.80 i was paying per giant diaper.
My first one did begin ripping at the seems after about 4 moderate wettings and eventually pulled free which i didnt expect. but im being more careful with this one and after 4 hours havent seen any signs of ripping.
Final verdict: they fit, theyre convenient and discreet, very cute with purple designs, childish and femine and perfect. I'll be able to wear 24/7 now without worrying too much about cost or social problems. Ive got a new favorite!