Heidi Klum's costume: step two

Heidi Klum’s costume: step two (Twitter)

Heidi Klum's costume: step three

Heidi Klum’s costume: step three (Twitter)

Heidi Klum's costume: step four

Heidi Klum’s costume: step four (Twiiter)

Heidi Klum's costume: complete

Heidi Klum’s costume: complete (Twitter)

Heidi Klum and Seal make their red carpet costume debuts.

Heidi Klum and Seal make their red carpet costume debuts. (Marion Curtis/Startraksphoto.com)

Heidi Klum and Seal are clearly bananas for Halloween. When the couple arrived at Klum’s annual Halloween party at the Dream Downtown’s PH-d Rooftop Lounge, they looked like escapees from the zoo or, perhaps, refuges from “Planet of the Apes.” The couple’s faces were completely obscured in ape masks and their bodies were covered head-to-toe in simian-like hair. Klum even sported prosthetic primate breasts.

Before arriving at the New York party—Klum’s second bash of the week after a Las Vegas shindig—the supermodel tweeted photos of herself getting into costume. “Here we go again!” she wrote, showing herself in a bald cap. “Ears are on!” she said next, with an accompanying photo. “Half way through…” she then said, showing herself with her monkey snout and brow in place, next to Seal.

Finally, she tweeted “Done!” along with a close-up of her newly craggy, speckled face. Arriving at the party with Seal, the couple hammed it up for photos.

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Klum has become famous for her elaborate Halloween costumes over the years. On Saturday, she hosted a Halloween party at TAO in Las Vegas dressed as a corpse. She was wheeled into the event on a gurney by two bloody doctors. In the past, she’s gone as everything from an alien invader to Lady Godiva on horesback.

“In our house it’s Halloween all year round,” Klum told People. “[My kids] love dressing up. Look at their mom. She’s always dressing up. It runs in the family.”