It was a cold night in London on Sunday, and Angelina Jolie should know.

The stunner strutted the red carpet for the U.K. premiere of her latest film, the computer animated Beowulf, in an outfit that included skin-tight black leather pants. In fact, maybe they were too tight.

As Jolie, 32, headed toward the theater in Leicester Square, it became clear that her slacks were splitting down the back. Luckily, her partner Brad Pitt was there to lend a hand – literally – as he shielded the gap with his palm.

To make matters worse, Jolie also stepped in gum at the premiere, and a sizable wad stubbornly stuck to one of her sky-high Christian Louboutin heels.

The Oscar-winner hardly seemed to notice her wardrobe woes, however – graciously signing autographs for fans and making the red-carpet interview rounds.

The couple – in town for the premiere without kids Maddox, 6, Pax, 4, Zahara, 2, and Shiloh, 1 – also found time for a date-night on Saturday. They slipped out for dinner at Roka, a London restaurant known for its sashimi and tempura.

They “enjoyed all [our] best dishes,” the manager said, “and looked very, very happy.”