Jennifer Aniston wowed in a cleavage-baring gown at the Screen Actors Guild Awards last night (26.01.15).

Jennifer Aniston

Jennifer Aniston

The 'Cake' actress - who attended the prestigious ceremony with her fiancé Justin Theroux - turned heads on the red carpet in a vintage bronze Galliano gown with a deep V-neckline cut down to her waist.

The screen beauty admitted it had been love at first sight when she was presented with the dress and credited her golden glow to a recent Mexican getaway.

When asked the secret behind her flawless tan, she told PEOPLE: "Courtesy of Cabo San Lucas."

Adding of her decision to wear the stunning gown: "I kind of just dropped dead for it."

Her close friend and stylist, Chris McMillan added: "It's couture, it's bohemian, it's golden like Jennifer and it was sexy ... She looks California, she looks gorgeous, she looks pretty."

The 45-year-old actress was joined on the red carpet by Julianne Moore - to whom she missed out on the award for Female Actor In A Leading Role - who looked equally stunning in an emerald Riccardo Tisci gown and Chopard earrings.

'Wild' actress Reese Witherspoon - who was also nominated in the Female Actor category - opted for a custom Giorgio Armani asymmetric creation and donned more than $3.5million of Harry Winston Jewels for the ceremony held at the Shrine Auditorium in Los Angeles.