I have bought these trousers from Cos. Love them.
But the top I was going to wear exposes a little more arse (saggy) that I wanted! Arse has slid down my legs a bit. 
Any suggestions for a top that will fall to tops of my legs or cover most of my arse?
I have boobs-32 H, hourglass shape, 5'8". Size 14.
And it is for a Saturday night on the town, so pretty glam.
I am googling but cant find a thing....