I still get vests for under, but when it's warmer I'll probably only use them at bedtime. Also still using sleepsuits for bedtime currently, but again won't really use once it's warm at night. So I guess it's personal preference with that one whether you think it's worth buying them. I'm currently just stocking up on leggings, t-shirts, dungaree and shorts co-ords ready to transition to the warmer weather but daily arm he just wears a vest with a top, leggings/jogging bottoms and a thin-ish cotton jacket x
Vest, sleepsuits, long sleeve tops and leggings
Pj's rather than sleepsuits for my little one as his legs are so long but also like in summer you can mix n match lengths. Lightweight jacket, summer hats, rompers x
We use sleep suits at night but more like outfits in the day so leggings/trousers and tops or dungarees. Still using vests as a layer under clothes for the day though. I feel like a good cardigan or lightweight jacket will be a good investment for this time of year too x