See how the Oscar winner has changed looks through the years....
1. Changing styles: Sandra Bullock
Sandra Bullock age 31. Bullock started acting professioally at the age of 23. She studied drama at the East Carolina University in North Carolina but was already used to the stage. Her German mother Helga was an opera singer and voice coach and Sandra often sang in the choir of her mum's stage productions.
2. Changing styles: Sandra Bullock
A curvier Bullock in 1995. The star loves food and her sister is a pastry chef who works for Bullock's eco conscious brasserie in Texas, Bess Bistro.
3. Changing styles: Sandra Bullock
Sandra with co-star Ben Affleck at the 'Forces Of Nature' premiere in 1999. We really like Sandra's vampish style here. The look is very 90s but the paler skin and dark eye make really work for her. The straight, dark brown bob works well for Bullock too.
4. Changing styles: Sandra Bullock
Sandra Bullock with Keanu Reeves in 1996. The pair worked together on film 'Speed', one of Bullock's most successful films and the one that really put her on the acting map
5. Changing styles: Sandra Bullock
Sandra at the 1996's Academy Awards sporting dark hair. The actress was becoming a huge star at this point, thanks to the aforementioned 'Speed' and 'Demolition Man'
6. Changing styles: Sandra Bullock
With 'Murder By Numbers' co-star Ryan Gosling. The pair dated for about a year in 2002
7. Changing styles: Sandra Bullock
Cute as a button, Sandra goes for dressed down and girly with curly shoulder length hair
8. Changing styles: Sandra Bullock
With Hugh Grant in 2002. The pair worked together on film 'Two Weeks Notice' and have been friends ever since, often seen joking and laughing together on the red carpet.
9. Changing styles: Sandra Bullock
Sandra Bullock is awarded the Hollywood Walk of Fame star in 2005. Bullock is one of today's most popular actresses and according to the 2012 Guinness Book of World Records she is the highest paid actress with a $56 million fortune
10. Changing styles: Sandra Bullock
The actress with then husband Jesse James, a motorcycle builder and reality tv star in 2005. James and Bullock met when Sandra arranged for her godson to meet Jesse as a Christmas present. Jesse and the actress fell in love and went on to marry. However the pair divorced in 2010 because of James' infidelities.
11. Changing styles: Sandra Bullock
Sandra shows off her highlighted hair. Bullock has never changed her look dramatically, but has been known to go from caramel blonde to brown and both hair shades really suit her
12. Changing styles: Sandra Bullock
Bullock is reunited with 'Speed' co-star Keanu Reeves at the 2006 Academy Awards. Bullock gets it right once again with a fabulous navy gown
13. Changing styles: Sandra Bullock
It's 2006 an Sandra shows off a new short bob. The actress often plays with her hairstyles and she seems to suit most dos!
14. Changing styles: Sandra Bullock
Sandra Bullock looks stunning at the 2007 Costume Institute Gala at the Metropolitan Museum of Art in New York. The cherise shade of her dress really suits her colourings and the cut of the gown is perfect to show off Bullock's fabulous figure.
15. Changing styles: Sandra Bullock
Sandra shows off her incredible figure in 2009. We love her dress here. The star is known for her simple and elegant style and she always gets it right
16. Changing styles: Sandra Bullock
Sandra Bullock attends the premiere of Ryan Reynold's film 'Green Lantern'. Bullock and Reynolds have been close friends for years. The pair met though a mutual pal and went on to work together on the film 'The Proposal', one of Sandra's most successful movies ever.
17. Changing styles: Sandra Bullock
Sandra out and about in New York City with her gorgeous son Louis. Bullock adopted the baby from New Orleans in January 2010 but kept the news quiet until March. The actress and ex husband Jesse James had started adoption proceedings four years earlier and when they split up Sandra went ahead and adopted little Louis on her own.
18. Changing styles: Sandra Bullock
Sandra Bullock at this year's Academy Awards in a beautiful Marchesa gown. Bullock won a Leading Actress Oscar in 2010 for the film 'The Blind Side'
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