Balthazar Getty's SoHo Kiss With Sienna

Sienna Miller and her billionaire boyfriend, Brothers & Sisters star Balthazar Getty, share a passionate kiss in New York City’s SoHo neighborhood on Saturday.

Sienna, 26, and Balthazar, 33, are apparently still going strong, snuggling up to each other in the brisk NYC weather.

Just last week, the two were spotted spending vacationing again in Positano, along Italy’s Amalfi coast. (The cozy couple vacationed there together in July, when their relationship first surfaced and Sienna was spotted topless.)