Sienna Miller: Up2Us Gala Without Tom Sturridge

Sienna Miller keeps it bright while attending the 2013 Up2Us Inaugural Gala held at the Tribeca Rooftop on Tuesday (June 4) in New York City.

The 31-year-old actress posed with Naomi Watts at the event, which “promotes sports as the solution to obesity, youth violence and educational challenges.”

PHOTOS: Check out the latest pics of Sienna Miller

The day before, Sienna and her fiance Tom Sturridge were spotted holding hands while attending the 2013 Theatre World Awards at the Music Box Theatre in the Big Apple.

On the same day, Tom was seen pushing their daughter Marlowe while Sienna chatted on the phone in a different part of the city.

FYI: Sienna is wearing a Burberry dress at the gala with Prada shoes and Adeler earrings. Sienna is also wearing an Isabel marant dress, Tabitha Simmons boots, and a Fendi bag. Tom is using his Bugaboo stroller.

15+ pictures inside of Sienna Miller attending the Up2Us Gala…