https://babikini.com/

Cherries full bottom suit. Covers a diaper. No xx-large available for this style. 

x-small: 0-6 months

small: 7 to 12 months

medium: 1 to 2 years

large: 3 to 4 years

x-large: 5 to 6 years

xx-large: 7 to 8 years