Whether it's a drastic cut or a vibrant new color, Rihanna  is no stranger to hair changes. To celebrate her birthday today, we've rounded up the most statement-making hair moments in the songstress's career. Blond or brunette, pixie or bob, Rihanna is always surprising fans with something new and noteworthy.
In 2006, a fresh-faced Rihanna  wore her long hair crimped, along with a subtle gray smoky eye, to an appearance on MTV's TRL.
Rihanna  just may be the queen of the asymmetrical hairstyle. This one-sided bob, which she sported at the 2007 Kids' Choice Awards, was a look to envy.
At the 2008 Grammys, Rihanna  went for an even shorter pixie style. And to complement her dark hair, she kept the makeup palette light and neutral.
At the Inglourious Basterds premiere in 2009, she paired this pompadour updo with winged eyeliner and a glossy red lip.
By 2010, Rihanna  updated her look with a layer of golden blond highlights spattered about this much-talked-about bowl cut.
Rihanna  arrived at the 2010 American Music Awards with a deep burgundy hair color and a pale gold eye shadow.
While promoting her movie Battleship in 2012, Rihanna  showed off her version of the ombré trend with platinum blond ends and dark brunette roots.
In a surprising move, Rihanna  premiered a boyish pixie at the 2012 MTV Video Music Awards.
A few weeks later, while attending a Christmas-tree-lighting ceremony in London, Rihanna  mixed things up yet again, wearing this retro updo.
At the 2013 Grammy Awards, Rihanna  returned to her brunette hair color but this time with subtle caramel tips. And, of course, her favorite bright red lipstick made an appearance too.
For her River Island fashion launch in 2013, Rihanna  decided to go for an edgy beauty look  involving a mullet and raspberry-blue lipstick.
Rihanna  brought the "doobie" wrap outside the bedroom for the 2013 American Music Awards. Her wrapped style and pearl pins caused quite the controversy .
Currently, Rihanna  is fluctuating between a shoulder-length bob and these waist-length locks, which she wore to the Roc Nation pre-Grammys  party this year.