Three cheers for Reese Witherspoon! The Oscar-winning actress, 40, officially announced her new DirecTV channel, Hello Sunshine, at AT&T Celebrates the Launch of DirecTV Now on Monday, November 28, in NYC, wearing the perfect LBD. See it up close — and hear all about DirecTV's new streaming service — in Red Carpet Daily, presented by DirecTV!

The Draper James founder and mom of three stunned in a short-sleeved black lace dress with a scalloped hemline, teamed with dangling earrings and pointed-toe pumps. And she wasn't alone! Witherspoon was joined at the fete by Sarah Jessica Parker, who wowed in her own LBD with three-quarter sleeves and a looped necklace, and Nina Garcia.

Before the end of the night, Witherspoon shared via Instagram a snap of herself onstage toasting her VOD channel, which will be focused on stories about women and available to DirecTV and DirectTV Now subscribers mid-2017. She captioned the shot, "So excited to partner with @att and #DirecTVNow to bring @hellosunshine's female-driven content to their customers! ☀️" 

So excited to partner with @att and #DirecTVNow to bring @hellosunshine's female-driven content to their customers! ☀️

A photo posted by Reese Witherspoon (@reesewitherspoon) on

To see Witherspoon's style from every angle, watch the video! And keep watching for our latest round of Who Wore It Best? starring Lupita Nyong'o and Christina Milian in Kenzo X H&M's bright florals. (Even a puppy helps Us vote!)

(Wardrobe: Lovers + Friends Hayley Dress at Revolve)

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