Lupita Nyong'o's pearl Oscars dress has been stolen, Sergeant Richard Bowman of the West Hollywood Sheriff's Department told ABC News.
The actress's Calvin Klein Collection gown, made of more than 6,000 pearls and valued at $150,000, was stolen from her hotel at the London Hotel in West Hollywood on Wednesday while she was out.
Bowman added that detectives were on the scene this morning and have video footage that they will review to see if they can identify the culprit.
"This is a terribly unfortunate situation, and we are working with law enforcement on their investigation," said a spokesperson for the hotel.
Nyong'o, 31, won the Best Supporting Actress Oscar last year and presented at this year's awards, wearing the custom dress that was designed for her by Francisco Costa.
Nyong'o's publicist declined to comment, while a rep for Calvin Klein has not yet responded to requests for comment.