Christian Siriano has dressed a plethora of A-listers over time, but he doesn’t have any trouble picking favorites. On Wednesday, the designer and “Project Runway” mentor stopped by Bravo’s “Watch What Happens Live,” talking to host Andy Cohen about the very best looks he’s designed for stars corresponding to former First Lady Michelle Obama, Zendaya and Billy Porter.

Below, a have a look at Siriano’s celebrity-style countdown.

Zendaya

Siriano created a hot pink pantsuit for the “Euphoria” star, who attended a Humane Society profit in 2016. “It was certainly one of the primary times she wore a very cool suit, something that was like masculine/feminine,” Siriano said.

Ever since, Zendaya has favored menswear-inspired ensembles, sporting suits by Valentino, Fear of God and Sportmax, to call just a few.

Janelle Monáe

Monáe turned heads on the camp-themed Met Gala when she wore a Siriano gown complete with a motorized blinking eye. The colour block trompe-l’oeil piece was inspired by Pablo Picasso’s portraits.

“Particularly, I wanted to focus on Picasso’s African Period within the early 1900s,” Monáe told Vanity Fair back in 2019.

Leslie Jones

Siriano created this scarlet off-the-shoulder gown for comedienne Leslie Jones to wear on the premiere of “Ghostbusters” in 2016. Weeks before the event, Jones tweeted that she had trouble finding a designer to decorate her for the premiere. Siriano gladly stepped in, telling The Hollywood Reporter, “I support all women regardless of age or size.”

Michelle Obama

The previous FLOTUS gave her iconic “Once they go low, we go high” speech in a royal blue midi dress by Siriano. The designer called Michelle Obama’s appearance on the 2016 Democratic National Convention “such a fantastic moment.”

Billy Porter

“Pose” star Billy Porter shut down the red carpet on the Oscars. Wearing a black velvet tuxedo gown designed by Siriano, Porter sought to “be a walking piece of political art…to challenge expectations,” in accordance with a 2019 interview.

Siriano will mentor a gaggle of returning designers on the twentieth season of “Project Runway,” which is subtitled “All Stars.” He’ll also take up hosting duties, following supermodel Karlie Kloss’ departure from the show. “Project Runway All Stars” premieres Thursday night on Bravo.