The diva and her husband James Brolin marked her age milestone by inviting 80 guests, including her stepson Josh Brolin, his wife Diane Lane, actor Pierce Brosnan, designer Donna Karan and saxophonist Kenny G, to Taverna Tony in Malibu, California, where they enjoyed traditional Greek food.
Streisand reveals it was a night full of memories - and her favourite moment came when her son Jason Gould hit the stage and showed off his vocal talents.
She tells People.com, ""It was an intimate magical event with only very close friends, people I've known and loved more than 20 years.
""The highlight of the evening was my son's film that he made for me. People kept asking, 'Who is that singing?' And when I said it was Jason, everyone was blown away by the beauty and soulfulness of his voice. Quincy Jones wanted to sign him on the spot.""
And that wasn't all: ""My friends made it an evening of surprises for me, flying in the remarkable Israeli mentalist Lior Suchard and gifting me with the performance of my favorite singer, Johnny Mathis, and many, many more highlights.""