Demi Lovato and Corbin Bleu are still using their star power for good.

The duo are teaming up with Forever 21 to design t-shirts that will benefit the Starlight Children’s Foundation, for which Corbin is the national spokesperson.

The celebrity designers – Corbin, Demi, Paris, Nicky and Kathy Hilton, Colbie Caillat, and Audrina Patridge – were given art materials, which included paints, markers, and sketch pads, to create a unique painting on canvas using the themes of “star” and “light.”

Corbin shared, “I am excited to be designing a T-shirt on behalf of Starlight and Forever 21. As a Starlight ambassador I have been inspired by the children and families I have had the privilege of meeting along the way, and by the strength they’ve shown in the hardest of times. I encourage everyone to get involved with Starlight and help lift the spirits of these brave children.”

The line of T-shirts will be available for purchase in select Forever 21 stores and online at Forever21.com. In addition, each celeb’s original artwork will be up for auction at Starlight’s eBay store starting on December 21.