If the last time you bought some undies involved chucking a five-pack of cotton knickers into your shopping basket, it's time to turn the run-of-the-mill into an indulgence. Buying lingerie should be about treating yourself and feeling sexy - as well as knowing you'll be comfortable in your purchases. The best way to do that? Head to an exclusive, specialist lingerie shop where you'll be treated like a princess throughout your visit. Here are four fabulous stores ...

Agent Provocateur

The Beckhams, Christina Aguilera and Jordan Bratman, Vernon Kay and Tess Daly ... Think of a loved-up celebrity couple and chances are they've been spotted stocking up on undies at Agent Provocateur. Each shop is decked out boudoir-style, with soft lighting, plush curtains and velvet seating: you'll feel super-sensual and sexy before you've even tried anything on. Branches in London, Birmingham, Leeds, Manchester and Glasgow: for more details or to shop online, go to www.agentprovocateur.com.

Sheen Uncovered

South-west London celebrities and ladies who lunch are among the loyal clientele of this gorgeous lingerie boutique in East Sheen - where owners Anita and Jackie pride themselves on their bra-fitting expertise, not to mention their keen eye for the prettiest undies and swimwear around. Beautiful brands including Simone Perele, Chantelle and Fantasie are available in-store and online at www.sheenuncovered.co.uk.

Bravissimo

If you're sick of squeezing into ill-fitting undies and want to celebrate your curves, this is the store for you. Bravissimo is dedicated to making life easier for big-boobed women - by offering beautiful, sexy lingerie that looks and feels fabulous. There's also a free bra-fitting service in all 16 of the high-street stores. To find the shop nearest you, go to www.bravissimo.com.

Coco de Mer

This super-sensual shop in London's Covent Garden prefers to call itself an "erotic emporium" rather than a lingerie store - and a quick browse inside will soon reveal why. Many of the undies border on the cheeky side - sometimes in more ways than one! This is the place to go for handmade Little Bo Peep knickers or diamante nipple covers (yes, really). Naughty - but nice! For more details, go to www.coco-de-mer.com.