Katy Perry was among the many famous faces attending Beyoncé’s star-studded LA concert on Monday night.

The Roar hitmaker, 38, stuck to the glamorous silver theme with a figure-hugging dress with an off-the-shoulder design.

Katy took to Instagram to share a glimpse at her show experience as she partied with pals, sipping on drinks and larking about.

Beyoncé took to the stage on her 42nd birthday to wow the 70,000-plus capacity crowd at the SoFi Stadium.

Adele, Zendaya, Tom Holland, Kate Hudson, Justin and Hailey Bieber, Chris Rock, Lizzo, Kate Hudson, Normani, Brandy, Kim and Khloé Kardashian were among the stars in attendance.

Katy looked great in her silver dress which she teamed with stylish shades that matched her outfit perfectly as she posed for a bathroom mirror selfie.

She penned in the caption: ‘came to kiss the ring @beyonce thank you for being born so we can all be better.’

She was seen grooving to all her big hits as she stood in the stands before enjoying some canned refreshments.

Beyoncé celebrated her 42nd birthday on stage with a special surprise guest taking the stage to sing Happy Birthday to her: Diana Ross.

The superstar singer wound down the last of three Los Angeles Renaissance Tour stops in style on Monday in front of a star-studded crowd.

The crowd was quite stunned when diva Diana, 79, took to the stage in a glamorous glittering black gown.

She helped lead the crowd in singing Happy Birthday at just after 11 PM on Monday evening, hours after rumors surfaced that she would make a surprise appearance.

Just like the first two concerts in L.A. over the weekend, the crowd was filled with celebrities, like Kylie Jenner and Timothée Chalamet, seemingly going public with their romance after month of rumors that they have been dating.

The show began exactly at 9:04 PM – coinciding with her birthday on September 4 (9/4), with Ross taking the stage a few hours later, greeting the crowd with, ‘Hello LA!’

Ross came out to sing her song Love Hangover, before wishing Queen Bey a happy birthday, with Bey rushing up to give her a hug with tears in her eyes.

‘I’m here to celebrate Beyoncé’s birthday,’ Ross said, as Bey was seen mouthing, ‘I love you,’ to Ross.

She lead the crowd in a rousing rendition of Happy Birthday, and after the song they embraced again, as Ross is heard asking, ‘Were you surprised?’

‘Thank you so much! You are so amazing! This is the legendary Diana Ross!’ Beyonce said as the crowd cheered for both living legends.

After performing Flaws and All, she delivered a passionate birthday speech, thanking the fans, her family and the original members of her group Destiny’s Child.

‘My soul is full. I’m so thankful, I’m trying not to cry. I’m thankful to be alive. I’m thankful to be on stage. I’m thankful to look out and see your faces,’ she began.

‘I’m thankful to be able to provide a safe space for all of y’all. I’m thankful for music, for the ability to heal myself through music which then heals all of you,’ she added.

She went on to thank her parents Tina and Matthew Knowles and her husband Jay-Z, even referencing her hit 2016 album Lemonade.

‘I’m thankful for every tear, for every year. I’m thankful for my children. I’m thankful for my husband. I’m thankful for all the s**t we’ve been through,’ she said.

‘I’m thankful for my beautiful father who is here tonight; I thank you for his sacrifice, for his pain. I’m thankful for my mother, my beautiful queen. I’m thankful that we all have the ability to make lemonade out of our lemons,’ she said.

She added that she is also, ‘thankful for Kelly Rowland, Michelle Williams, LeToya Luckett, LaTavia Robertson,’ the members of Destiny’s Child.

‘I’m thankful for all of you guys who have been with me since 1997. I’m thankful for every flaw, for every stretch mark, every FUPA. I thank you that I’m here at f***ing 42. I’m grateful for joy and I thank God. I thank you, God,’ she concluded.