Selena Gomez's new Puma collaboration will raise money for charity.

The 25-year-old beauty - who has worked with the likes of Louis Vuitton and Coach during her career - has designed a pair of trainers, called the Phenom Lux, which will help fund important research into Lupus, an autoimmune disease the star has battled for years.

Puma will be donating $100,000 of the sales from the trainers, which will go to the Lupus Research Alliance charity.

The cause is close to Selena's heart after the condition left her needing a kidney transplant last year.

The brunette beauty has strayed away from the romantic floral looks she previewed in her upcoming clothes collection with Coach.

Instead, the all-white Puma design has a detachable gold ankle-bracelet, which adds a touch of femininity to the look.

She said: ''It gives you a little bit of sparkle, and it can make you feel like you're dressed up even when you're in sweats.''

Selena has even designed a pair of sheer socks to be paired with the trainers, admitting that mixing contrasting wardrobe looks makes her ''feel pretty''.

She explained: ''I've been wearing some fun socks with my sneakers and it just makes me feel a little bit more feminine, I spent a lot of time creating a sock that felt comfortable, chic, and fun.

''I've become super into my way of wearing sneakers, I also wear my sneakers with dresses, things that feel pretty.''

Meanwhile, Selena first announced the news of her surgery via her Instagram account.

Alongside a picture of herself in a hospital bed, Selena wrote: ''I'm very aware some of my fans had noticed I was laying low for part of the summer and questioning why I wasn't promoting my new music, which I was extremely proud of. So I found out I needed to get a kidney transplant due to my Lupus and was recovering. It was what I needed to do for my overall health.''