Credit: Dimitrios Kambouris/FilmMagic; Venturelli/

A royally inspired new romance?

Joe Jonas was among the A-list attendees mingling with Prince William and Duchess Kate during Saturday's Foundation Polo Challenge held at at the Santa Barbara Polo and Racquet Club.

Also on hand for the charity game? Rob Lowe, Rosario Dawson, Alex Pettyfer, Jennifer Love-Hewitt, Zoe Saldana . . . and model Karlie Kloss.

The Chicago-born catwalker, 18, evidently caught the eye of Jonas, 21. Although the twosome (both guests of Brit fashion designer Jack Wills) arrived at the event separately, they took time to squeeze into a photo booth together and vamp for several adorable snapshots together.

The pics show a breezy, flirty chemistry between Kloss and Jonas, who split from Twilight star Ashley Greene earlier this year.

No word yet on whether they're officially an item, but Jonas told Us Weekly at the bash that William and Kate, both 29, certainly inspired him. "They are an iconic couple...I think everyone wants to find their Kate."

Tell Us: Do you think they make a cute couple?