The actress, who is well known for her red carpet stumbles, was skipping down to greet her adoring fans who waited in the rain to see the Hollywood A-listers when she lost her footing.
JLaw’s face said it all.
Jen was followed by a red carpet usher, brandishing an umbrella, after checking the rain situation by holding a hand out, the actress decided to make a run for it and darted towards her fans.
She also had another wobble as she was guided into London's BFI IMAX by the usher, but kept on smiling despite the slip-up.
The Oscar-winning star, who famously stumbled on the stairs before accepting her Academy Award, stars as mutant Mystique in the highly anticipated film, hit the red carpet at wearing a gorgeous floor-length silver gown.
It seems the Oscar winner was eager to flaunt her curves at the star-studded event, as she turned away from photographers to show even more skin in the backless outfit.
She completed her outfit with a sultry-looking red lip that made her look every inch a classic Hollywood movie star.
Sadly for the 25-year-old, her evening didn't manage to go off without a hitch.
Living up to her reputation, Jennifer ended up tripping on her gown as she walked the red carpet and almost took yet another tumble.
The latest sequel in the hugely popular franchise sees Apocalypse, an immortal mutant, wake up after sleeping for a thousand years and causing havoc around the world.
Directed by Bryan Singer, the blockbuster also stars Michael Fassbender, Rose Byrne and Jennifer's ex-boyfriend Nicholas Hoult.
Following in the wake of Captain America : Civil War and Batman v Superman : Dawn of Justice, X -Men is set to be the next superhero film to win over superhero fans this year.
