She is mother to five-month-old Daisy Dove, who she shares with her handsome fiancé Orlando Bloom.

And Katy Perry, 36, was sizzling with Sєx appeal when she enjoyed a night off from parenting duties to promote American Idol on Jimmy Kimmel Live on Monday.

The singing sensation showed off some serious leg in a video taken backstage as she slipped into a ʙuттefly-print gown by Dundas which had a thigh-high split.

 

‘Mama has the night off’: Brunette Katy Perry put on a very Sєxy display on Instagram on Monday as she swapped parenting duties to promote American Idol on Jimmy Kimmel Live

She teamed it with strappy sandals, telling fans they ‘get inches’ as she waved her slim pins and smouldered in front of the camera.

And there was a very Sєxy cut-out section at the waist which highlighted her shape.

Katy captioned the image: ‘Mama has the night off so you get inches and @americanidol on @jimmykimmellive tonight ok. ♥️’

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Fake: She also tagged makeup artist Michael Anthony, stylist Tatiana Waterford and hair stylist Jesus Guerrero in the post, before admitting it was fake on her Instagram story

There was an air of nostalgia about her look, too, because Katy was wearing a long brunette wig for the occasion, which suited her perfectly.

But she later took to Instagram to whip it off and reveal: ‘Everything is fake’ showing off her platinum cropped ‘do beneath.

She also tagged makeup artist Michael Anthony, stylist Tatiana Waterford and hair stylist Jesus Guerrero in the post.

 

Hair flip: She was also rocking black open-toed pumps and ornate black and purple earrings, which were seen when she gave a hair flip for the camera

Perry appeared on Live With Kelly and Ryan on Monday, sporting the same striped top from her Instagram story.

She revealed on the daytime talk show that she got to work filming American Idol shortly after giving birth to her daughter Daisy, who was born in late August.

”I did start filming American Idol season 4 after I’d given birth, five weeks later,’ she told hosts Ryan Seacrest and Kelly Ripa.

‘And I didn’t plan that. But it was like, “Oh, my God!” It was so intense, you know?’ she added.

‘Giving birth, then going back to work and breastfeeding, like — holy cr*p! This is what women do? Oh my God!’ Perry continued

American Idol kicks off its 19th season on Sunday, February 14 on ABC.