It’s a celeb smooch switcheroo!

Will Arnett’s ex girlfriend, Alessandra Brawn, is dating Emily Ratajkowski’s ex-husband Sebastian Bear-McClard, sources tell Page Six.

Ratajkowski and Bear-McClard split in 2022, and the “Arrested Development” actor and Brawn broke up quietly late last year.

Now a spy tells us Brawn and Bear-McClard, who have known each other since childhood and are regulars at the local dog park with their kids from their previous relationships, have got together instead.

Brawn and Arnett share a 5-year-old son, Alexander “Denny” Denison.

Brawn also has another child with her ex-husband, nightlife impresario Jon Neidich, whom she married in a luxe ceremony in Tuscany that was covered by Vogue.

McClard and Ratajkowski have a four-year-old son, Sylvester Apollo Bear.

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