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Meryl Streep and Jennifer Hudson (in Reem Acra) stayed close at a Revlon concert benefiting the The Rainforest Fund in New York City. The happy ladies were among the list of entertainers for the evening, which also included Elton John, Bruno Mars and Sting. See which other mega-stars else made an appearance at the auction, and check out more from last night’s hottest events in the gallery.

Jennifer Hudson’s stage outfits command attention—especially this little red number she wore to the VH1 Divas Celebrate Soul concert in December. The designers behind the look, The Blonds’ David and Phillipe Blond, were beyond thrilled to have the powerhouse singer in one of their designs. “That was just so, so magical,” Phillipe told InStyle.com at the label’s fall 2012 fashion show. “She was completely elated,” David noted. “Even during rehearsals we were really emotional because it’s the first time she’s worn such a revealing and fun costume onstage.” Phillipe added: “It was a really special moment. We all got really emotional.” Fashion can do that sometimes!

See more of Hudson’s best outfits!

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• Jennifer’s Whitney Houston Tribute
• Jennifer’s Blue Manicure

To remember Whitney Houston, Jennifer Hudson took to the Grammy stage tonight to sing a rendition of the late singer’s signature song, “I Will Always Love You.” With tears streaming down her cheeks, the Oscar winner belted the Dolly Parton-penned tune in a striped-top black gown, with her hair styled to look like Houston’s signature chocolate curls. Hudson didn’t leave a dry eye in the audience, who celebrated her touching salute with a standing ovation. Tell us: What did you think of her performance?

Plus, see Houston’s memorable moments.

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• Best Performance Looks of the Grammys
• Katy Matched Her Hair to Her Dress!
• You Can Do: Adele Eyeliner