Beyoncé
The Grammy-winning songstress was spotted on her way out in a black ensemble.
Tracee Ellis Ross
Diana Ross' famous daughter made a sartorial splash in colorful feathers.
Kourtney Kardashian & Khloe Kardashian
The famous mother of three opted for a sparkling suit with flared bottom while her sister donned a golden gown.
Gayle King
The CBS This Morning co-anchor sparkled in a red ombre, sequin gown.
Leonardo DiCaprio
The Oscar winner kept a low profile while leaving the event.
Chris Rock
The comedian made his arrival in a blue suit.
Evan Ross & Ashlee Simpson
Diana Ross' son and his famous wife were among the most fashionable attendees.
Khloe Kardashian & Kris Jenner
The reality star mother and daughter dazzled in glamorous sequin gowns.
French Montana
The rapper was chicly dressed in a double-breasted suit jacket.
Stevie Wonder
The music icon, who performed his "Happy Birthday" hit for Ross, was spotted leaving the Hollywood Palladium.
Heidi Klum & Tom Kaulitz
The supermodel stunned in a standout gown alongside her fiancé.
DJ Khaled
The rapper was dressed to impress in a stylish suit.
T.I.
The rapper was spotted on his way out in a sweatshirt and track pants.
Tom Ford
The designer looked dapper in a classic black suit.
Bebe Rexha
The Grammy-nominated songstress shimmered in purple sequins.
Sean "Diddy" Combs & Janice Combs
The famed rapper escorted his glamorous mother into the party.
Jesse Tyler Ferguson & Justin Mikita
The married couple coordinated in black ensembles as they stepped out in honor of Ross.
Bette Midler
The iconic performer donned feathers for the special event.
Gabrielle Union
The actress made a sartorial splash as she stepped out for the big birthday party.
Robin Thicke & April Love Geary
The famous pair dazzled in their chic party looks. Thick later performed "Endless Love" with the famous birthday girl.
Teyana Taylor
The songstress was dressed for a party in a floor-length backless gown.