Hi, I've recently taken the plunge and invested in 2 pairs of sweaty Betty leggings. I plan to get out and walk now with the longer days. I love the lift and hold the leggings give but I'm still self conscious about size 18-20 bum and thighs and would love a long sweatshirt like top to skim them. These are surprisingly hard to find as like minded people have snapped them up in size 18. I've done the usual Next and M&S. Is there somewhere I'm missing out on? I need to explore new places as Ive found that since I've gone past size16, there is limited scope in many shops I've used for years. Thanks