The 38-year-old singer put the television drama aside as she performed at the reopening of the Tiffany & Co. flagship store in New York City on Thursday.

Katy looked incredible in a tight strapless dress in the brand’s signature color, which clung to her figure in all the right places.

The garment featured a sheer skirt and a long train, as well as bow detailing on the derrière.

Mom-of-one Katy accessorized with a pair of statement silver heels and a matching handbag and wore her dark hair down in loose waves.

The California Gurls hitmaker posted a snap of her outfit on Instagram and simply captioned it: “now look at me I’m sparkling #TheTiffanyLandmark @tiffanyandco.”

Her fans and 197 million followers were quick to compliment her.

“So gorgeous,” one person wrote, while another said: “Ok woww you are beyond stunning.”

A third commented: “the prettiest and best vocalist singer,” and a fourth added: “You look very beautiful.”

It comes after Katy was accused of behaving “rudely” toward American Idol contestant Wé Ani earlier this week.

During Monday’s episode of the show, Wé was picked as the last person to go through to the top 12 and Katy was slammed for failing to give her any feedback after her performance.

Wé was picked out of Dawson Wayne, Elijah McCormick, and Malik Heard to join a dozen contestants who made it to the next round.

The camera panned to Katy at the judge’s table, who looked shocked at the news.

Wé then performed Adele’s song, Skyfall, to round out the show.

Instead of giving feedback on her performance, Katy announced that she was “shook [sic]” over the results of the vote and urged American Idol viewers to vote for their “faves.”

She said: “I’m just so [shaken] right now. I’m [shaken] by the results and that song is so dramatic.

“There’s so much drama going through my body right now, I need a nap.”

The coach – who debuted a new hairstyle on the show – added: “But the truth is, America, you guys have the votes. You’re the ones voting and if you’re not voting, you’re not using your voice.”

Wé’s smile faded and she replied quietly: “Yes.”

Looking animated, Katy went on: “Your faves aren’t safe so from now on, vote for who you wanna see in the top 12.”

Viewers accused Katy of being “unprofessional” and of “doing Wé dirty” by looking shocked that she got through to the top 12.

One wrote on Reddit: “Katy was hands down rude from the face she made (that at first, I read as disbelief over Wé’s incredible performance), to go on and on about voting for your favorite contestant.

“It was incredibly unprofessional.”

Another added: “Wé [was] treated rudely. After her performance, instead of giving feedback, Katy reminds everyone how important it is to vote.

“Um. Hello. Can you give this poor girl her feedback first? Katy’s comment sounded like she was saying, jeez America, why’d you vote this girl through?

“So unprofessional and unfair.”