Ben Affleck was a no-show at the premiere and sent a close pal in his place

JENNIFER Lopez shows off her sizzling "revenge dress" at the premiere of her new film -- made with ex Ben Affleck.

The actress, 54, left little to the imagination at the screening of Unstoppable.

Her revealing Tamara Ralph FW24 Couture gown featured just two pieces of glittery silver fabric, tied together with bows.

J-Lo's new sports drama sees her play the mother of one-legged wrestler Anthony Robles in the biographical film produced by Artists Equity -- founded by 52-year-old Ben.

Despite gushing about a joint project with his wife last year, Affleck was a no-show at the Toronto International Film Festival in Canada on Friday.

Last week J-Lo shared a series of Instagram snaps including one wearing a revealing white swimsuit.