Bras N Things' e-commerce site has quadrupled in size since its relaunch in February 2010.

The website, www.brasnthings.com, stocks around 1200 products and 3400 style and colour combinations available in a full range of sizes, petite to plus.

It allows customers to browse through popular categories such as lingerie, sleepwear, swimwear, active and brands providing the same choice they would experience at a store level.

The company says 98 per cent of online orders are dispatched on the same day, with most customers able to expect delivery of purchases within one to two days or ordering.

The e-boutique's ‘Fitroom’ mirror Bras N Things instore fitting program, showing customers how to find the correct size through a series of steps.

“Once customers know their perfect size, they can be confident that their size will be the same, whether they purchase instore or online," said Prudence Gracio, Bras N Things online business manager.

Bras N Things has a 100 per cent money back guarantee, allowing online customers to return their items should they be unhappy with the size or style once received.

The company plans to expand its online business further, with a customised website for New Zealand later this year.

Delivery to Sydney customers will also be improved this year, with same day delivery to Sydney metro to be rolled out.