The couple's appearance comes after the actor said his girlfriend was mature for her age.
Henry Cavill was all smiles as he escorted his 19-year-old girlfriend, Tara King, down the red carpet at Vanity Fair's Oscar party on Sunday night.
The 32-year-old actor stepped out in a tuxedo complete with a velvet jacket, while his date wore a sophisticated orange gown that she paired with open-toed nude heels.
WATCH: Allison Janney Shows Off 30-Something Boyfriend at Sundance
This was Cavill and King's first red carpet appearance as a couple since first being spotted together back in October.
The Batman v Superman: Dawn of Justice star recently opened up to ELLE magazine about their relationship and their 13-year age difference. "People say age is just a number. It's actually a real and true sign of someone's maturity," he said. "But in this case, she's fantastic."
WATCH: Tyga Opens Up About His And Kylie Jenner's Controversial Age Difference
Cavill might be a blockbuster movie star, but he still got nervous when he first asked King out. "When I met my girlfriend, I was super intimidated. I wanted to impress her," he admitted. "I was thinking, 'Don't mess this up, man.'"
The action star also said that he understood the "natural reaction" to question his relationship with a teenager, but disclosed that he too "was going out with a 32 year old" when he was just 19.
WATCH: Jennifer Lopez and Casper Smart Reenact Cougar Scene From Wedding Crashers
Demi Lovato also met her boyfriend, Wilmer Valderrama, when she was a teenager, and revealed to ET that the 36-year-old actor was concerned at first about their 12-year age difference. Lovato, however, says she "loved him when [she] met him."
"He had some hesitations," the 23-year-old pop star said. "Once I got older, we could be together."