Marian Brown is turning 86. It's her first birthday without her twin sister Vivian who died two weeks ago.
The famous twins were often spotted together in identical outfits.
At 6 p.m., Marian's friends are asking people to fill the mezzanine of the Sir Francis Drake Hotel in Union Square.
The crowd will sing happy birthday to Marian as she blows out 86 candles.
For more details about the event, click here.