Barbra Streisand is one of the world's most successful entertainers. Her reach spans well beyond the United States; she has sold more than 140 million albums worldwide. Streisand's style has transformed from her fashion-forward days on stage in the 1960s to her cool and causal style today.

In her new movie The Guilt Trip, Streisand plays Joyce Brewster, the mother of Seth Rogan's character, Andrew Brewster. Andrew decides to take his mother on a cross-country trip after he becomes concerned she may be in a "rut."

The movie, which is set to premiere on December 25th, promises to be an awkward and honest look at the relationship between mother and son.

To see Barbra's entire style transformation, click the slideshow above!

--Courtesy of stylelist.com