Gigi and Bella Hadid were polar opposites at Paris Fashion Week

The supermodel Hadid sisters were polar opposites on Paris Fashion Week runways Tuesday — with Gigi buttoned up in black and Bella baring some bosom in white. 

Gigi, 24, strutted for Chanel in a severe, long-sleeved, black belted frock that appeared straight out of Salem circa 1690 in a show at the Grand Palais.

The velvet dress, which included an oversize, polka-dotted round collar and matching cuffs, was paired with pilgrim-style belt and black pumps, white ankle socks and stockings, visible through a high slit.

Gigi’s locks were pulled back in a tight bun and she wore minimal makeup.

Younger sister Bella, meanwhile, was more sinner than saint, rocking a revealing outfit at the Alexandre Vauthier show. The 23-year-old stunner left little to the imagination in a white pinstriped blazer over her bare chest and matching high-waisted slacks.

She posted a video of herself closing out the show in the risque getup — holding the jacket together as she twirled at the end of the runway.

“Closing the beautiful @alexandrevauthier couture show today… I Love you Alex, I am so proud of you,” she captioned the clip.

Just as courteous as her sister, Gigi also issued a “thank you” to Virginie Viard, who replaced Karl Lagerfeld at the helm of Chanel following the iconic designer’s death last year.

“Merci beaucoup @virginieviard @amandaharlech and the whole, sweet, hard-working CHANEL Atelier team who put so much into these Couture pieces. It is an honor :),” Gigi wrote.