They celebrated two years of wedded bliss in July.
But Ashton Kutcher, 39, and Mila Kunis, 34, looked like newlyweds on the red carpet of the Breakthrough Prize Awards at the NASA Ames Research Center in Mountain View, California, on Sunday night.
The loving actors put on an amorous display as they giggled to each other at the event celebrating the best scientific work of the year in addition to inspiring future generations of scientists.
Happy: Ashton Kutcher, 39, and Mila Kunis, 34, looked like newlyweds on the red carpet of the Breakthrough Prize Awards in Mountain View, California, on Sunday night
Mila showed off her tanned and toned arms in a strapless gown which featured black sheer paneling along the bust.
Her gorgeous gown was worn tight around her slender waist and billowed into a satin floral skirt, with bright pink roses and green vines throughout.
The mother-of-two tied back her long chocolate brown hair into a loose chignon and accessorized with a pair of sparkling diamond earrings.
Beauty! Mila showed off her tanned and toned arms in a strapless gown which featured black sheer paneling along the bust
Sheer delight! Her gorgeous gown was worn tight around her slender waist and billowed into a satin floral skirt, with bright pink roses and green vines throughout
Ashton looked handsome in a black suit with a crisp black bow tie peeking through the collar of his white shirt.
Actress Lily Collins looked beautiful in a white fringed dress with pink panels popping through.
The darling dress was fastened with a ribbon around her neck and nearly showed off side portions of her chest.
Pretty in pink: Actress Lily Collins looked beautiful in a white fringed dress with pink panels popping through
Slinky: The darling dress was fastened with a ribbon around her neck and nearly showed off side portions of her chest
Lovely! Kerry Washington showed off her long legs in a flirty floral mini dress worn with a darling white petticoat
Kerry Washington showed off her long legs in a flirty floral mini dress worn with a darling white petticoat.
A thick white belt was wrapped around her slender waistline with a matching black belt positioned below.
Host Morgan Freeman looked dapper in an all-black ensemble which featured shiny black lapels and dark sunglasses to match.
Whiz Khalifa and girlfriend Izabela Guedes wore his-and-hers matching black outfits and shades for the star-studded event.
Charming: Mayim Bialik showed off her shoulders in a darling black dress which featured a slit up her thigh
Stylish: Host Morgan Freeman looked dapper in an all-black ensemble which featured shiny black lapels and dark sunglasses to match
Cool: Whiz Khalifa and girlfriend Izabela Guedes wore his-and-hers matching black outfits and shades for the star-studded event