October 13, 2011 11:00 AM

Jason Merritt/Getty

Three’s company!

Selma Blair and her boyfriend, fashion designer Jason Bleick, were all smiles as they arrive at the Veuve Clicquot Polo Classic Los Angeles, held at Will Rogers State Historic Park, with son Arthur Saint on Sunday.

In just eleven short weeks, baby boy has already become quite the jet-setter — we’ve spotted him in Venice and Toronto with his actress mom as she promotes her latest film, Dark Horse.

“He’s such an easy newborn. He’s really lovely,” Blair, 39, tells the Associated Press.

RELATED: Spotted: Selma Blair and Arthur – Cuddle Bugs!

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