I visited some of the biggest and most trusted lingerie shops to see what would fit me and what would stay put. Before all that, however, I also spoke to one

lingerie expert on how to find the correct strapless bra. Eloise Rigby owns The Pantry Underwear shop in Islington, which caters to cups from A to K, and is launching the first underwear department in Liberty. She gave me a few helpful rules to stick to.

1. Go for one back size smaller than usual. Without shoulder straps, cups are only supported by the back strap, so this needs enough pull to keep the cups in place. To compensate, you'll (probably) need to go up a cup size.

2.Start on the loosest set of hooks. This will ensure the longest life from the bra, so you can move inwards as the back strap stretches.

3.To check if a size works, pop an arm behind your back, and use the thumb to pull back the strap outwards. You should be able to pull it back only half an inch with resistance for a strapless bra.

4.You also want to make sure the cups aren't gaping at the top of the breast. And depending on the style of the central section of the bra, the wires that meet in the middle should be sitting flat.

Ready to shop strapless bras? Keep scrolling for the best that won't fall down.