Help! My son is in a wedding next month. He is 18 mo and wears a size 2T but with his chubby belly and diaper bottom not all 2Ts fit and the button down onesie selection is slim. I've seen parents post on parenting boards in the U.K. about a suspenders-like product that goes between the legs to keep a shirt tucked in, but no one in the U.S. knows what I'm talking about.
Does anyone know what this product is called, or have a link to one I could purchase online?
I know o can make a shirt a onesie, but he wears button ups enough that it would be great to have a solution for all his shirts!