Katy Perry chowed down on pizza after catching her ‘mother’ Madonna’s concert in Los Angeles on Monday night.

The bonafide ‘Queen Of Pop,’ 65, brought her Celebration Tour to Inglewood’s Kia Forum for a five-show stint that concluded Tuesday.

And Katy, 39, had a total blast as she and her close friends enjoyed Madonna’s music from a VIP area.

As per pH๏τos shared by Katy on Tuesday, the Teenage Dream hitmaker rocked a Sєxy all-black look for the concert.

The outfit consisted of a busty black halter top, a vinyl A-line skirt, thigh-high vinyl boots and a tiny designer purse.

Her signature raven hair was styled in a messy bun and heavy black eyeshadow made her blue eyes pop.

Katy’s pals congregated at her Montecito home, where the posed for a group pH๏τo before heading to the show.

She then had someone snap a pH๏τo of them making their way through the venue before stopping by Madonna’s merch booth.

Katy put her iPhone in selfie mode to capture a quick video of herself singing along during the show with her friends.

After the concert, the multi-Grammy Award nominee treated herself to Papa Johns to-go pizza.

In her post’s caption, she reminded fans of the importance of ‘balance’ and fondly referred to Madonna as ‘mother.’

Katy wrote: ‘Did bikram yoga, awakened kundalini and opened up my throat chakra with my mother @madonna last night.

‘Oh yeah and then I had pizza cause ya know, balance,’ she concluded.