Jennifer Aniston accessorizes black-and-white dress with giant engagement ring

You know what pairs well with a huge diamond engagement ring? Pretty much anything. Even still, Jennifer Aniston chose her attire well for the 26th American Cinematheque Award gala to honor Ben Stiller on Thursday (Nov. 15) night.

The actress opted for a black-and-white strapless Valentino gown, coordinating with fiancé Justin Theroux, who wore a classic tux to the event at the Beverly Hilton.

While Aniston and Theroux skipped the press line, arriving just before the show started. During the gala, Aniston, who co-starred in "Along Came Polly" with Stiller, presented a video package of the comedian's onscreen romances.

"His package is surprisingly large," she jokes. "Very expansive, and its lasting power speaks for itself."

Aniston was one of several of Stiller's past co-stars to honor him: Will Ferrell, Jack Black and Patton Oswalt shared stories of working with Stiller, as did Tom Cruise, who appeared in a surprise video.

Take a closer peek at Aniston's ring below.