Recently reunited "Twilight" stars Robert Pattinson and Kristen Stewart seen holding hands at a Halloween Party at Hollywood Forever Cemetery on October 31, 2012. Credit: AKM-GSI

Guess they weren't in the mode to play dress-up!

On Halloween night in Hollywood, Robert Pattinson and Kristen Stewart' appeared holding hands at a star-packed costume bash at the Hollywood Forever Cemetery. Although they play vampires in The Twilight Saga: Breaking Dawn -- Part 2, the reunited, reconciled couple were in their usual attire of jean, super-casual attire of jeans, t-shirts and sneakers -- wearing freaky, transparent masks that did little to conceal their world-famous famous from the crowd.

But the affectionate couple, who were spotted kissing during the party, weren't alone for their outing. Pattinson's longtime pal Katy Perry arrived at the shindig with the twosome with a predictably more elaborate ensemble. The "Last Friday Night" singer, 28, dressed as Jane, the goth best friend of Daria in the beloved MTV animated show. (One night earlier, the chart-topper had a reunion of her own: She attended the L.A. Lakers game -- with ex-husband Russell Brown spotted across the stadium at Staples Center.)

A bit later in the evening, Stewart, 22, switched up her look and changed into a pink wig and round sunglasses.

Officially recovered from their summertime cheating drama, Stewart and Pattinson, 26, will continue promoting the final Twilight film, with a junket scheduled for later this week; it's expected to be their very first promotional event together since news broke of Stewart's July fling with married director Rupert Sanders.