Luise Rainer was nominated for an Academy Award in 1937 for her role in "The Great Ziegfeld,"but she wasn't planning on attending the event. She'd won an Oscar the previous year and didn't expect to win two years in a row.
Rainer was surprised when her studio chief called, ordering her to attend. She didn't own many dresses, so she actually wore her nightgown, stating that it was "the nicest dress [she] owned."
Judging from this picture, it's hard to tell Rainer's dress is a nightgown in disguise. The form-fitting garment with bell sleeves and mock turtleneck looks thoroughly stylish (and we bet it was the most comfortable dress ever worn to the Oscars). Rainer did take home an award, becoming the first thespian to win back-to-back Oscars.
On Jan. 12, 2011, Rainer turned 101 years old, making her the oldest living Oscar winner to date.