Jette Joop By Lascana Swimsuit (£45, originally £60)
For those who are smaller in the bust area, look for details such as padded cups or extra ruffles that add volume to the chest, or adjustable straps to pull on for an added boost. The frill on this plunging neckline creates extra layers in the bust area whilst the straps can be tightened to create more cleavage, if desired.