The Oscar winner, 71, looked sensational in a figure-hugging black long sleeved dress with fishtail detailing at the bottom.
Helen added a statement necklace and bling clutch bag to her ensemble plus a slick of red lipstick, looking younger than her years.
The Queen actress was clearly a hit among her peers too, as the likes of Kristen Stewart, Amy Adams and Anna Kendrick flocked to have their picture taken with her.
Former Twilight star Kristen, 26, also earned style points for her chic black midi dress, which featured cold shoulder detailing and tiny cut outs at the hip and waist.
The actress – who is prone to switching into trainers part way through her film premieres – managed to keep her balance on her sky high black heels as she cosied up to the British actress for a picture.
Meanwhile Superman actress Amy, 42, also opted for black, wearing a thin strapped dress with lace detailing at the neckline.
One person who didn’t get the black memo was supermodel Alessandra Ambrosio, who looked as sensational as ever in a white jumpsuit.
The 35-year-old looked lean and toned in the ensemble, which featured a choker-style neckline, and she paired it with a box clutch bag and a slick of dark plum lipstick.