no i don't think so, i think they go to 46 and apparently not for everything, last time i went i tried on a dress size 44, it fit, but very tightly, needed a 46 to make it fit better...so i asked at the cash register and she said, not sure if there's a 46 in that line... (was lucky though, they did go to 46 )
it's weird cause sometimes 44 is just perfect at jbc and some clothes in 44 are just a bit too small also at jbc... bit weird, so i'm hoping if the clothes are to my liking they'll be in my size lol