‘Tis the (Spooky) Season: Ciara channels Williams sisters, Coco Gauff doubles up for Halloween

WATCH: Gauff headlines Day 1 at the WTA Finals in doubles with Jessica Pegula.

Halloween came early for the tennis world and those who love it, led by musical superstar Ciara paying an iconic tribute to good friends Venus and Serena Williams alongside daughter Sienna.

The dynamic duo channeled the Williamses’ unforgettable Got Milk? ad from the late 90s and the resemblance is uncanny:

Though the WTA Finals is set to take begin on All Hallow’s Eve, Coco Gauff wasn’t about to let the schedule spoil her inner superhero, debuting a Moon Knight rendition on Instagram on Sunday after some technical difficulties.

“Instagram if you delete this again… count your days. you’re next on khonshu’s hit-list,” the American joked in the comments.

The comic and anime enthusiast completed the look with spot-on accessories, trading her tennis racquet for a pair of crescent darts.

Gauff showed off a second costume in honor of Teen Titan superhero Raven, taking to the streets of Fort Worth in the super get-up:

Not to be outdone, Anastasia Pavlyuchenkova continued to tease her return to action after a knee injury shut down her season, showing off an impeccable transformation into Leeloo, Mila Jovovich’s character in the 1997 sci-fi epic The Fifth Element.

Noted cosplayer and former world No. 2 Anett Kontaveit welcomed the Witching Hour with a more traditional ensemble, celebrating the holiday at home with friends.

As we gear up for the 50th anniversary of the WTA, Billie Jean King entered the fray by sharing Battle of the Sexes-themed costumes sent in over the years:

Check back for more spooky sights as the festivities undoubtedly continue.