Madonna, Drew Barrymore and More of Britney Spears' Celebrity Wedding Guests

Madonna was in attendance when Britney Spears said "I do" to Sam Asghari after more than four years of dating. Madonna and Spears are longtime friends, and even collaborated on their 2003 hit "Me Against the Music."

The pair even recreated their iconic MTV VMAs kiss, 19 year later!

As the two icons shared a hug on the dance floor at Spears' reception, Maria Menounos (pictured right) cheered them on.

Selena Gomez, who wore a blue, strapless jumpsuit for the occasion, danced at the couple's reception.

Drew Barrymore was also in attendance, sharing a hug with Spears and Gomez at the reception.

If you look closely, you'll see West Side Story actor Ansel Elort in the far right of this photo in the background.

Donatella Versace designed the bride's show-stopping wedding dress and the groom's tux, telling PEOPLE, "Designing Britney and Sam's wedding outfits came naturally to me. A tremendous amount of love was poured into every detail. Together with our Atelier, we created a gown and tuxedo that exudes elegance and glamour. They look just perfect together!"

Versace posed with Paris Hilton ahead of the ceremony.

Hilton's husband, Carter Reum (left) was her date for the evening's festivities, with producer Jeff Beacher joining them for a pic.

It was a family affair for the Hiltons! Paris Hilton's mom, Kathy Hilton, was seen arriving for the wedding on June 9.

We spy Kathy Hilton with a microphone!