In her 'unusual' nighttime regimen, Katy Perry employs a lint roller on her feet.

Katy Perry revealed she has an unusual bedtime habit involving a household item.

A lint roller was among the items in the Balenciaga Bel Air Carry All bag of the 39-year-old singer who appeared in the latest episode of British Vogue's "In the Bag" YouTube series.

I swear by my lint roller," Perry declared, employing it on the front of her dress. "I will lint roll the bottom of my feet before I get into bed.

"Do we all have weird things like that?" she inquired. "I believe we do. I just made mine public."

The 13-time Grammy Award nominee did not disclose the reason for adding the "odd" practice to her nighttime routine or when it began.

"I swear by my lint roller." — Katy Perry

In the segment, Perry revealed the beauty products she carries with her, including a stolen skin care tool from her fiancé, Orlando Bloom, 47.

"I do skin prep when I'm not wearing makeup. I swear by the Solawave," she said.

"Perry confessed to stealing the Solawave from Orlando's gift basket," she said while pulling it out of her bag.

"This small pen is incredibly convenient and easy to use. Simply switch it on, and it's red light therapy. As I raise it up, I can work and take calls. Red light therapy may help increase collagen production, which can revitalize your skin. In essence, taking care of your health is the key to wealth."

One of Perry's essential beauty products was the Tumeric Glow Moisturizer from Miranda Kerr's skincare line, KORA Organics.

"This is created by Miranda Kerr, our modern family mother, who is Orlando's ex-wife and a good friend of mine," she said.

I've gotten my team hooked on this incredible moisturizer that my colleague created. It contains turmeric and makes you feel sparkly and glowy. I'm using it now.

"This is great because you can refill the jars, so you can continue to use them. Once you've used up the contents, simply purchase a refill packet. I absolutely adore this tumeric glow."

Bloom and Kerr were married from 2010 to 2013 and share son Flynn, 14. Meanwhile, the "Pirates of the Caribbean" star and Perry welcomed their first child, daughter Daisy, in August 2020.

Since having my daughter, the contents of my bag have definitely changed.

"I consistently provide a snack, water, and a small toy for her to play with."

The musician has been working on new music since leaving "American Idol," and his sixth studio album, "143," will be released on Sept. 20.

In July, Perry released the first single from her album, "Woman's World," but has faced criticism since it was revealed that she collaborated with Dr. Luke, whose real name is Łukasz Sebastian Gottwald, on the song.

Dr. Luke has been accused of sexual assault and emotional abuse by Kesha for years, along with other allegations.

On Thursday, "143's" second single "Lifetimes" was released, along with a music video.