See Beyonce, Jennifer Lopez, Madonna + More at Chime for Change [Pics]

Mirror, mirror, on the wall. Who's the biggest diva of them all? Plenty o' divas -- like Beyonce, Jennifer Lopez, Madonna and many more -- turned up to support and perform at Chime for Change: The Sound of Change Live, a concert held at Twickenham Stadium yesterday (June 1) in London.

Chime for Change is a global campaign, founded by Gucci, for girls' and women's empowerment. That's always a favorite cause of Queen Bey, who is on the founding committee. She rounded up so many divas we could barely keep track! Girl power!

Check out the PopCrush photo recap of the diva-studded event!

Beyonce and hubby Jay-Z share a smooch on stage. Aw! Romantic.

Jayonce performing. Look, Blue Ivy, it's mom and dad!

J. Lo and Mary J. Blige -- can we call them Mary J. Lo? -- went hard. Stiletto toe-to-toe.

Madge gave a speech, looking divine in head-to-toe black.

Oh, look, it's Beyonce again, hot as ever.

Jessie J and her shaved head were going 'Wild' in the hizzy.

It's divatastic J. Lo once again, all leathered up. Yep, she was fierce.

John Legend was dapper in a suit with polka dots. We can dub him "J. Lege" just for today.

Rita Ora was a golden goddess in multiple ways -- the hair and the outfit.

Florence Welch was flowing ... in her blue-green stage attire.

More black leather, this time from British cutie Ellie Goulding.

Rapper Iggy Azalea was also on hand to do her thang.

Oh, and here's a "beyforehand" shot. She just owns it, from the hoodie to the aviators to the word "Angelou," a reference to the poet, flashed on screen.