"She gonna kill me for posting this," the Mötley Crüe drummer captioned the photo, "but look at this 100% natural body."
“OMG my face,” Furlan responded. Hole lead singer Courtney Love also chimed in, writing “So cute!”
Lee, whose past high-profile wives include Pamela Anderson and Heather Locklear, hasn't shied away from showing Furlan off for his 766,000 Instagram followers.
He fittingly used the bomb emoji to describe Furlan's pose in a black bikini and see-through cover-up here:
The 24-year-old Furlan, whose fame on now-defunct video-sharing service Vine earned her a spot on Time's 2015 list of the most influential people on the internet, described how she met her 56-year-old rocker hubby in a recent interview with Fox News.
“We met online, but we knew about each other for years. He used to watch my Vine videos – he was one of my followers and obviously, I loved his music,” she said.
“I was a Methods of Mayhem fan and Mötley Crüe fan. I wasn’t a huge fan — I didn’t listen to a bunch of Mötley Crüe, but I definitely liked Methods of Mayhem and I always thought he was super attractive."
"We just hit each other up and ended up going on a couple of dates and it was awesome — now here we are.”
Maybe age really is just a number.