Sophie, I've been asked to be bridesmaid next year too! The bride, my friend, is a gorgeous petite size 8 and her other two maids are a size 8 - this fills me with dread! I'm a size 16 and feel awful about myself!
But... my focus is now set and I have a year to sort myself out! I've started on a meal replacement plan for a 28 days and then will switch to healthy/calorie controlled, I just need the shakes for the quick result so I have more chance of sticking to it!
Really hope you can start to feel better about being bridesmaid