AceShowbiz - Will Arnett, 54, has been in the spotlight not just for his career but also for his romantic life. Currently dating 38-year-old fashion entrepreneur Alessandra Brawn, with whom he shares a four-year-old son named Denny, he created quite a stir when he arrived at Gigi Hadid's star-studded birthday party with another woman, instead of his significant other.

Arnett was seen arriving at Le Chalet in Midtown Manhattan on a festive Friday night alongside Leah McCarthy, an Instagram influencer and close friend of Gigi's. She donned a black crop top that flaunted both her midriff and cleavage and paired it miniskirt and sheer stockings.

In stark contrast, Will opted for a more casual ensemble. He sported a partly tucked-in shirt with the top buttons undone. While Leah is close friend of Gigi's, Will is a pal of Bradley Cooper's. The "Maestro" actor directs Will in new film, "Is This Thing On?"

Gigi's birthday bash was attended by several A-list celebrities, including Bradley himself, Anne Hathaway & husband, as well as Gigi's family such as sister Bella Hadid, mom Yolanda Hadid, and dad Mohamed Hadid. Gigi and Bradley arrived at the party together, and she sparked engagement rumors for wearing a gold band on her finger.

Arnett, previously married to comedian Amy Poehler, finalized his divorce in 2016 but has maintained an amicable relationship with her to co-parent their sons, Archie and Abel.

As rumors swirl about the significance of Gigi Hadid's ring, Arnett's appearance with McCarthy has also fueled speculation.