Lady Gaga didn’t have to point out the clear “Charlie and the Chocolate Factory” reference at the grand opening of the Gaga Workshop at Barneys New York on Madison Avenue Monday night. It’s obvious from the gigantic Gaga spiders, wig-shaped archways and cartoonish statues of the star that the polished retailer has been turned into a world of pure imagination.

View Photo Gallery: The performer, known for her brazen fashion choices, partnered with the retail giant to create a Willy Wonka inspired in-store holiday shop.

The result is a neon-colored cross between Tim Burton’s ‘The Nightmare Before Christmas” and “Beetlejuice,” which Lady Gaga helped top off by appearing in a voluminous, custom-made gown drenched in pearls. It was, for Gaga, pretty tame — a nod to the genteel setting of her pop-up store, and a contrast to the carnival funhouse of the Gaga products around her.

Little Monsters who have been very, very good this year might get some of Gaga’s loot in their unicorn or stiletto-shaped stocking ($65 each). There are holiday ornaments shaped like Gaga’s terrifying “Born This Way” cover ($25), and toys that pop the artist out of a spinning egg ($35), a la the 2011 Grammy Awards. Frighten or enthrall young Gaga fans with a Little Monster plush set ($95) that looks eerily close to those Ugly Dolls.

Grown-ups can dress like Gaga in lace sunglasses ($295), motorcycle jackets ($625), and a silver necklace made with shards of glass ($1,305). You can check out the full list of merchandise here. A portion of the proceeds will support Gaga’s Born This Way foundation, which will launch in 2012.

But what does Gaga herself want for Christmas? Her wish has already been granted, she told the Associated Press, with her white Chanel gown by Karl Lagerfeld. “Christmas came early,” she said. “Christmas is today.”

Lady Gaga, in queen-like couture, cuts the ribbon at Barneys. (Amanda Schwab/AP)

A truly attention-getting way to show off hair products at Gaga's Workshop — under a giant, one-of-a-kind wig. (Andrew Burton/AP)

No guessing who inspired this sculpture. (Andrew Burton/AP)