11/19/2014 12:04 EST | Updated 11/19/2014 12:59 EST

Scarlett Johnasson Had A Baby Two Months Ago, Guys

She only gave birth to her first child two months ago but already Scarlett Johansson is back at work and looking fabulous.

On Tuesday, the new mama and her twin brother Hunter hosted the second annual Friends Of Rockaway Hurricane Sandy fundraiser, and the siblings made quite the stylish pair.

The 29-year-old "Lucy" star—who welcomed daughter Rose Dorothy with fiance Romain Dauriac eight weeks ago—looked gorgeous in a black-and-blue Proenza Schouler dress that cinched her svelte waist.

ScarJo paired her pretty frock with black pumps, a gold box clutch and stud earrings. A side-swept 'do, nude lips and a smoky eye completed the gorgeous ensemble.

Dauriac wasn't by his fiancée's side, but his absence was on purpose. Scarlett revealed to Us Weekly that she specifically chose her brother to accompany her down the red carpet, as they were both raised in New York City and felt the need to get involved with the fundraiser.

"Hunter and I were here in New York—we were 15 years old when September 11 happened, and that was pretty shocking," Johansson told Us Weekly. "We thought the city that we grew up in was rock solid, and it shook the foundation of the city—for very different reasons obviously."

She added: "Seeing the city shaken once more [by Hurricane Sandy]; it was totally totally shocking for the people that were living here. Two years later, people are feeling huge effects of this devastating loss."

ScarJo, forever

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