Hype Clothing - Sizing help needed

[Happybell]

How do Hype Clothing come up size wise? Can't seem to find a guide anywhere! My DS is just turning and 11 and is a small 11yo so do I go 9-10 or 11-12?

I actually found them quite small made in regards to the crop tshirts and jumpers so I'd size up for your dd. Haven't tried any of the bottoms so can't comment on them sorry.
Oh I got given a 50% off code yesterday for hype & I won't be using so you can have it if you want.

Thanks j3nn1 for the advice and offer. Got a code already :)

Hype comes up small. My son is a small 11 and normally a 9 in clothes but hype a 11-12 and that fits with no room!

J3nn I'd appreciate the code if still going!...