For the cause: Selena Gomez stunned in a yellow sleeveless dress with asymmetrical hem as she attended the Breaking Through Gala benefiting the Lupus Research Alliance Monday

Selena showed off her legs in the dramatic number that was comprised of a slip with diaphanous overlay.

The overlay fell to the floor at the back revealing her legs and her stunning pair of embellished yellow and silver sandal heels.

Selena wore her long bob swept back into a chignon and added black mascara, a touch of blush and some light pink lip color.

Supporting research: The 25-year-old has been diagnosed with lupus and underwent a kidney transplant over the summer as a result of complications of the auto-immune disease

Stylish: The singer wore her newly dyed blonde hair in a chignon and stepped out in yellow and silver sparkly sandal heels

Leggy look: The starlet kept the New York chill out with a shearling-lined denim jacket as she arrived at the event

The former Disney tweener was diagnosed with lupus a few years ago and in September she revealed she had had a kidney transplant as a result of some of the complications of the disease.

Lupus is an autoimmune disease that causes a person’s immune system attacks healthy cells causing damage.

There is no known cure and, according to the Lupus Research Alliance website, it is most often diagnosed in young women between the ages of 15 and 44.

Cross-country trip: Selena had hightailed it to the East Coast after appearing at the American Music Awards in Los Angeles on Sunday night

At the AMAs Sunday night, Selena performed her new song Wolves.

She got plenty of attention showing up with her normally dark hair cut and colored; she also got some unwanted attention after Twitter lit up with accusations she had lip synced her performance.

The singer hasn’t publicly responded to the claim.

Meanwhile, she’s thought to have rekindled her romance with first love Justin Bieber liked and then unliked a picture of Selena’s new hair that fan account @revivial_purpose posted.

The Canadian pop star and Selena have been virtually inseparable since she split from The Weeknd a few weeks ago.

Comeback: She performed her new song Wolves at the awards show, the first time she has sung on stage since having her kidney transplant