This devoted artist really has her girlfriend’s back.

Natasha Farnsworth paints intricate masterpieces — and uses her girlfriend as her canvas.

Farnsworth, 20, of Arizona, began using gal pal Caitlin’s back and torso one afternoon when she and her sweetheart were looking for ways to spend more time together.

“What better surface than a beautiful bare back?” the artist told Caters News, adding that the body painting has now become a “monthly tradition.”

Being a muse can be exhausting, so Farnsworth says she tries to finish her works — all done in easy-to-wash-off water-based paint — in under 90 minutes to keep Caitlin, 25, from cramping.

During their sessions, Farnsworth has turned Caitlin’s back into glittering galaxies, mawing caves and gushing waterfalls.

“She gives me inspiration and motivates me to do my best, so having her be so open and patient during the whole process is amazing,” the artist said.

“I’m hoping it can inspire other young artists to never stop trying at something they love creating.”