question about sizing on kdjerseys

hi, im planning to order a belgian #11 doku, portugese #25 n. mendes, and german #19 sané on kdjerseys (all full sleeve fan versions). i'm a little hesistant on the sizing options because i see on this sub that u need size up for rep jerseys. for context, im 165cm and 54kg so i want to know what size i should get. thanks!