There are really so many potential combos it's hard to decide so I feel your dilemma! What Stormie suggested with addition of some tights/ bUggs/ socks (old school) perhaps. A mini dress/ diaper/tights/ bandanna or bow combo. Tank top w/straps, diaper and low rise (smaller) tutu's are cute together. Also really like overalls (short or long) w/ straps and socks. I'm a big advocate for mixing up parts of sets so random pieces that can be mixed w/other sets could work. Also liking the new floppy hoods so ... hooded zip or button-up jacket w/long sleeves and a collar (use w/o hood). I could go on ... way too many choices only lend to confusion .... Can't wait to see what you come up with!
just thought I'd add that I let the pixels/patterns help inspire which pieces I hex! certain types of patterns lend themselves better to certain clothing pieces. and some pixels sort of suggest fun accessories to add, like glasses if the pixel is wearing glasses.