Katy Perry got into a Cinderella costume on Sunday night’s American Idol episode.

And on Tuesday the diva revealed that she will be selling the glᴀss slippers she wore on Idol for her line, the Katy Perry Collection.

The Firework singer, 39, was dresses as the Disney princess from the original 1950 animated film.

Katy – whose daughter Daisy Dove attended Sunday’s taping of American Idol – posted the pH๏τo carousel to promote the new shoe.

She captioned it: ‘Shoesday was so magical it started on Sunday,’ tagging her brand @katyperrycollections.

In the post, she shares three of the shoes in her collection which all resemble the coveted golden slipper, though two of them are tinted pink and brown, respectively.

Her new shoe line currently offers an array of summer sandals that retail for $65 to $120.

The golden slipper shoe is available in pink, sepia and black and according to the website copy are made for ‘magical nights out.’ They are on sale for $65.

On Sunday, the I Kissed a Girl hitmaker also wore her Cinderella costume, albeit in a bit more magical way.

She first appeared in Cinderella’s work clothes but as she spun around, she turned into the princess-to-be in the pale blue dress and black choker.

Sunday was also Mother’s Day and Katy made sure to get tributes out to both her mother and her daughter Daisy Dove.

‘It’s definitely making space for a lot of different things,’ she told Parade at the American Idol Top 10 Tastemaker Event.

‘Not that Idol took a ton of time. I’ve really enjoyed all of my time on the show. And it doesn’t even feel like a job.’

This is Katy’s last season on the long-running singing compeтιтion and she has some ideas for who could fill her seat.

‘I gotta say Jellyroll was crazy when he came on the show,’ she told E! News. ‘I was convinced at anything he said. He could run for president, he could be my pastor, I might go back to church for him. He could sell me anything.’