The stars gathered at the annual event at the Pacific Design Center in West Hollywood on Saturday evening with a shared goal of raising money for children living in poverty. Guests sipped on Casamigos cocktails throughout the night.
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Bieber, 26, opted for a sleek look for the occasion, wearing a strapless black gown with an open back, which she paired with gold embellished earrings.
Alba, 42, meanwhile, stood out as she wore a strapless gold chrome dress with matching platform heels.

This year’s recipient of the Giving Tree award was Hayek Pinault, 57, who attended with her husband,François-Henri Pinault.
“I cannot tell you how thrilled I am that you guys included me in this so very special night. I am such a big fan of this organization. I have a lot of respect for it,” began Hayek Pinault.

“We have a responsibility. They call in their hearts our future. They are our hope. And when we talk about essentials, I want to say something to you. Those of you that bought a pack of diapers or any of the essentials. Dignity are essential. Diapers are dignity. Make no mistake, love is an essential," Hayek Pinault said.

Gilbert Flores/Variety via Getty
It was a family affair forNicole Richie, who attended with husbandJoel Madden, as she sat with sister Sofia Riche Grainge and her husband Elliott Grainge.
Paltrow, 51, for her part, carried out catering duties at the event, manning the Broad Street Oyster Co. & Goop Kitchen station.

Gwyneth Paltrow/Instagram
She was seen in avideoshared on her Instagram Story adding chili oil to a tray of oysters after swapping her glam arrival look for a uniform and apron.
During the donations part of the evening, Miranda Kerr, 40, and her husband, Snapchat CEO Spiegel, 33, donated $1 million remotely, while Kardashian and Emma and Jens Grede from SKIMS donated $500,000. Alba and her husband, Cash Warren, meanwhile, donated $25,000 as did Paul, 41.
Snoop Doggalso performed as a musical guest during the event.
source: people.com