First things first, the right suit for your shape is essential to looking killer on the beach. Easier said than done, right? For the tear-free solution get someone else to do the hard work for you. Debenhams Personal Shoppers have aided many a distraught handbag staffer in her time of fashion need, be it a last-minute cocktail dress, a new bra and yes, bikinis. They also stock a great range of sizes (a relief for us bigger bosomed gals) and best of all the service is free with no pressure to buy.

 
Debenhams Free Personal Shopper, debenhams.com