Age ain’t nothing but a number to Mick Jagger’s fiancée, Melanie Hamrick.

“He’s younger than me!” the former ballerina, 37, exclaimed when Page Six asked about the age gap between her and Jagger, 81, at the New York City Ballet 2025 Spring Gala on Thursday night.

“He’s amazing, he really is,” she added.

The two met in 2014 while Jagger was on tour with his legendary rock band, The Rolling Stones, in Japan, where Hamrick had been traveling with the American Ballet Theatre.

They welcomed a son named Deveraux — the Grammy winner’s eighth child — in 2016.

Hamrick has shared adorable videos of Deveraux showing off his dance skills and, well, it’s safe to say he definitely has the moves like Jagger.

“It’s amazing. It’s natural, it’s in his genes,” she exclaimed. “No one taught him, no one influenced him. He moved like that before he saw any of his dad’s concerts.”

Meanwhile, Hamrick — who is in no rush to walk down the aisle with Jagger — has taken a break from dancing and focusing on her family and other passion projects.

Since hanging up her ballet slippers, she’s penned two steamy novels set in the dance world and told Page Six she’s hard at work on a third tome.

“It’s a little different than the first two so it’s going to take me a little time but it’s a modern retelling of ‘Giselle.’ It’s a big undertaking,” she teased.

So, does that mean fans can expect some smut? We couldn’t help but ask.

“Of course,” Hamrick replied with a laugh. “I’m not going to go away from my roots because it’s so much fun, but it’s not going to be as heavy, ‘soft-porny,’ as you said. I want to slowly venture into more storytelling.”