Margot Robbie stuns in a plunging olive green gown, accompanied by Brad Pitt and Leonardo DiCaprio, at the red carpet event.

She has been hot on the promo trail in support of the biggest movie of her career.

And Margot Robbie was every inch the A-lister as she led the glamour at the Once Upon A Time In Hollywood premiere in Berlin on Thursday.

The I, Tonya actress, 29, dazzled as she joined co-stars Brad Pitt, 54, and Leonardo DiCaprio, 44, and director Quentin Tarantino, 56, on the red carpet.

Here they are: Margot Robbie joined Brad Pitt, Leonardo DiCaprio and Quentin Tarantino at the Berlin premiere of Once Upon A Time In Hollywood on Thursday

Chic: The Oscar nominee flaunted her perky cleavage in a plunging olive green slip dress with spaghetti straps as she posed up a storm

The Oscar nominee flaunted her perky cleavage in a plunging olive green slip dress with spaghetti straps as she posed up a storm.

The dress featured pearlescent buttons down the midsection, before flowing into a elegant full skirt.

Her caramel tresses were styled in soft waves while her stunning features were enhanced with metallic shadow, fluttery lashes and a slick of coral lipstick.

Iconic actor Brad looked devastatingly handsome in a navy shirt, paired with a midnight blue suit.

Line-up: Margot joined co-stars Brad , 54, and Leonardo , 44, and director Quentin, 56, on the red carpet

Beauty: Her caramel tresses were styled in soft waves while her stunning features were enhanced with metallic shadow, fluttery lashes and a slick of coral lipstick