His sizzling designs and technical prowess have earned him comparisons to Tom Ford and Azzadine Alaia.

FORBES: Joseph Altuzarra's Fierce Fashion

Rihanna walked the red carpet in a fire engine red gown with sheer detailing on the midriff from Alaia.

FORBES: Jennifer Lopez, Justin Timberlake, Rihanna, Taylor Swift And More On The Grammy Awards Red Carpet

Though the cardigan was by Paris couturier Azzedine Alaia, many deemed the choice too casual for a royal moment.

WSJ: Fashion Industry Watches Michelle Obama at Inauguration