From the Wonderbra of the '90s to today’s T-shirt bras, what we find sexy shifts with social changes. So what are women wearing under their clothes in 2015? Has the focus shifted from breasts to bums? Has Fifty Shades of Grey unleashed consumer kinkiness? What do women want from their bras and pants?

The rise of athleisure has prompted brands to make comfortable clothing that’s fashionable as well as functional. Santa Monica-based Lunya is now shaking up the sleepwear market in a similar manner, offering stylish pyjamas and loungewear that work to improve the wearer’s slumber.

Athleisure may be a key player in Gen Y style, but it’s also relevant to what they're wearing under their leggings and hoodies. Ditching push-up bras in favour of sporty cuts and wireless bralettes, it seems comfortable is the new sexy for a generation that continues to challenge gender norms.

The term ‘environmentally-friendly materials’ usually conjures up visuals of hippy hemp bags and Sainsbury’s bags for life. UK-based All Bamboo is looking to make eco-consumerism more luxurious with its almost silk-like bamboo bedding. Is a life of luxury more sustainable than originally thought?