An L.A. photo shop was struggling — then country star Kacey Musgraves dropped in

Kacey Musgraves was in town earlier this week for two sold-out nights at the Greek Theatre. In her downtime, the Grammy-winning country artist and her sister stumbled into an inconspicuous little photo shop in Koreatown.

On a quest to develop some film, they found a “gem�: a cash-only, mom-and-pop shop with no internet presence but plenty of handmade backdrops, retro photo sessions and an endearingly old-school photo lab struggling to survive.

But that’s all changing now.

Musgraves, who won this year’s Grammy for album of the year for her acclaimed “Golden Hour,� created an Instagram account on Wednesday for Tom’s One Hour Photo Studio and Lab. Musgraves and her sister randomly happened upon the small, family-owned business at 4158 Beverly Blvd. in Koreatown.

The “High Horse� singer spent some time chatting with the shop’s owner and learned that the once-bustling business, which opened in 1991, had slowed to a crawl since the digital wave. (But as interest in ’90s camera culture surges, things could be looking up.)

Determined to give it a much-needed boost, Musgraves enlisted her 1.6 million Instagram followers and 811,000 Twitter fans for support.

“Let’s keep this charming business afloat!,� Musgraves wrote on her Instagram. Her efforts are paying off splendidly. As of Thursday morning, the shop had accrued nearly 28,000 Instagram followers. And a happy and overwhelmed Tom has been flooded with calls and portrait requests.

Musgraves herself posed for a series of dreamy portraits in the studio and shared the images on her Instagram.

“Our country is built on the backbone of these small businesses,� Musgraves told fans at the Santa Fe Opera house Wednesday night, which was captured on Instagram and shared on Tom’s newly minted account. “My parents are small-business owners, and they have been since I can remember... they’re making ends meet working together, just doing what they can. So I know what it’s like.�

The owner’s son, Nick, is a big fan of Musgraves and was overwhelmed with gratitude and made sure to express it.

“THANK YOU SO MUCH for visiting and supporting us!!!,� he wrote on Instagram. “...Our family business has been slow since advancements in technology have put one hour photo and retro studio photography on a downward path. But thanks to you and photography aficionados, we are still alive!�

Tom could not be immediately reached for comment, but his old photo shop, sandwiched between a pet store and a computer repair business, seems poised to survive after all.