My fiance got the same tux from Gilt and it arrived tonight.  Unfortunately is was HUGE!.  We even went to the YSL to try on for size and he was a 44r (54s) in the store and it was perfect. He ordered the 44r from gilt and it looked like he was wearing a suit 2 sizes big.  I think the sizing was totally off and now we stuck.  If you are over 6ft tall you ok but any shorter and you prob need to return :/