The 22-year-old beauty stepped out in a low-cut gray dress by Bec & Bridge, which she matched with heels by Burberry.
She was joined by actor Simon Baker for the announcement.
Stewart worked with Foster on the David Fincher movie Panic Room.
Foster later came to Stewart’s defense after Stewart was caught cheating on Robert Pattinson with director Rupert Sanders.
“In my era, through discipline and force of will, you could still manage to reach for a star-powered career and have the authenticity of a private life …” Foster, 49, wrote for The Daily Beast. “Not anymore … I’ve said it before and I will say it again: if I were a young actor today I would quit before I started. If I had to grow up in this media culture, I don’t think I could survive it emotionally.”
Foster is a two-time Golden Globe winner. She will give her speech at the 2013 ceremony, on January 13.
On Wednesday, Stewart was spotted holding hands with Pattinson at a Halloween party in Hollywood. See the photos, above.
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