Sylvester Stallone, the legendary action star known for his roles in Rocky and Rambo, is proving he’s still got the moves — even off-screen! The 78-year-old actor recently went viral after sharing a fun video on Instagram where he danced to Smokey Robinson & The Miracles’ classic tune, “More Love.” “I was caught off guard while going through a clothes fitting for an upcoming project — great song though!” Stallone wrote in the caption. The video shows the Hollywood icon grooving to the soulful track, showcasing his sense of humor. Fans were quick to praise the unexpected dance break, with many …