Katy Perry & Rita Ora at Harper’s Bazaar ICONS Party by Carine Roitfeld

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We don’t know what happened at Harper’s Bazaar ICONS event held at NY’s The Plaza Hotel on Wednesday evening. The party, thrown by fashion tastemaker Carine Roitfeld, should’ve been a gathering of the industry’s crème de la crème.

Instead? It became a battle for the title of “worst dressed this week!” It seems like Katy Perry was going for a vintage look, but she ended up looking more tacky than vintage.

Katy Perry attends the 2015 Harper’s Bazaar Icons event held at The Plaza HotelKaty Perry attends the 2015 Harper’s Bazaar Icons event held at The Plaza Hotel in New York City on September 16, 2015

She arrived sporting an old-fashioned wig with side-parted waves, and a sparkly gold Saint Laurent gown with a thigh-high slit.

Katy Perry and French fashion editor Carine Roitfeld wear similar sparkly metallic dresses with matching thigh-high slitsKaty Perry and French fashion editor Carine Roitfeld wear similar sparkly metallic dresses with matching thigh-high slits

She finished off her atrocious ’80s-style look with an awful pair of gold-and-leopard-print platform Saint Laurent sandals.

The only good thing we can say about her look is that at least she’s staying true to the matronly diva style that she seems to have adopted recently.

Katy Perry shows off her feet in gold patterned Saint Laurent sandalsKaty Perry shows off her feet in gold-patterned Saint Laurent sandals

If you really love these sandals for whatever reason, you can purchase the exact pair at Farfetch.

Saint Laurent Gold-Snakeskin Leopard-Haircalf Platform Sandals

Saint Laurent Gold-Snakeskin Leopard-Haircalf Platform Sandals

Anyway, we did mention this is a “worst dressed this week” competition — so who’s Katy’s opponent?

Rita Ora soon arrived wearing a horrible custom Prada sheer-paneled gown that looked like it was going for sexy baroque Morticia Addams.

Rita Ora attends the 2015 Harper’s Bazaar Icons event held at The Plaza HotelRita Ora attends the 2015 Harper’s Bazaar Icons event held at The Plaza Hotel in New York City on September 16, 2015

The embellished bra top and sleeve cuffs we could get behind, but not the out-of-place blue velvet collar that sticks out like a sore thumb.

Rita Ora wears a custom Prada sheer-paneled gown that features a blue velvet collar and embellished bra top and cuffsRita Ora wears a custom Prada sheer-paneled gown that features a blue velvet collar and embellished bra top and cuffs

At least Rita’s lace-up Dsquared2 “Ayers” sandals were on point, just like in her last head-to-toe red Moschino ensemble.

Rita Ora finishes her morbid look with a pair of DSquared2 "Ayers" lace-up sandalsRita Ora finishes her morbid look with a pair of DSquared2 “Ayers” lace-up sandals

You can get Rita’s exact sandals at Luisaviaroma.

Dsquared2 Ayers Snake Lace-Up Sandals, $1,380

Dsquared2 Ayers Snake Lace-Up Sandals

Which look did you love — or hate — more?

Credit: WENN