Kate Winslet couldn't have been prouder when she stepped out with her eldest son, Joe Anders , for the London premiere of their new film, Goodbye June , on Wednesday night.

Joe towered over his mother as they walked the red carpet together, with Kate dressed in a sleek black off-the-shoulder gown featuring a scoop neckline and a gold-buckled belt.

© Gareth Cattermole/Getty Images Kate's son, Joe Anders, penned the script for her new film

She wore her blonde locks in a chic up-do with face framing pieces falling down, and accessorized with gold hoop earrings, a gold necklace and a gold wristwatch.

Her 21-year-son looked dapper in a black suit with a white button-down underneath, paired with black dress shoes.

Learn more about Kate's three children below... WATCH: Meet Kate

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