Ok so I have tiny ass fingers. Like 4 or 4.5 ring size.

My fiancé said I could pick out 4 engagement rings I like and he'll pick from there. However I don't know if I want a really simple ring or something a little bit more. But I know it HAS to fit my finger since I don't wear jewelry. My wrists are extremely small that I can't even wear bracelets. So I'm at a crossroads!

Show me ya'lls because I'm needing ALL the help!

Edit: Added some pictures of my hand normal. My pinkie and my ring finger don't meet where the ring would sit but I'm not sure how it would be.