Wearing a slimming belt/knickers whilst pregnant, 3 months…?

Question by momma2B: Wearing a slimming belt/knickers whilst pregnant, 3 months…?
Hey. Im currently 5 weeks pregnant and bloated like a balloon. Already clothes arnt fitting thats not all bad and obviously baby wants me to gain a whole load of squiggy weight lol. Im meant to be a bridesmaid in 2 months for my sister. The dress is fitted and im worried im going to be a little bigger around the waist. I wanted to know if its ok to wear one of those belt/knicker things that women wear to hold it in abit to look slimmer?? I dont intend on wearing it all day, just for the ceramony and pictures. Thanks x