Rihanna has developed into quite the fashion icon over the past few years. What she wears as is discussion-worthy -- as is what she doesn't wear.

Her red carpet attire choices make her a permanent fixture on the "to watch" list at major industry events. We always look forward to what RiRi will don or drape her body in.

In honor of her birthday, we've rounded up RiRi's best red carpet looks and those which have wowed us over the years.

The singer was hot in a strapless, hot pink gown in 2007.

Rihanna Red Carpet
Ethan Miller, Getty Images
loading...

At the NRJ Awards back in 2010, RiRi was ravishing in a white, lace-floral Jean Paul Gaultier dress.

Rihanna Red Carpet Jean Paul Gaultier
Francois Durand, Getty Images
loading...

With her Parisian chic bob and low-cut, checked dress, RiRi was sexy and sweet in 2007. Check out that double dose of sideboob. Whoa!

Rihanna Red Carpet 2007
Frederick M. Brown, Getty Images
loading...

Never mind that flame-hued hair. RiRi's Stella McCartney gown at the 2011 Met Gala was slinky and showed off sidecheek in a totally Rihanna way. She was the portrait of a goddess.

Rihanna Red Carpet 2011 Met Gala Stella McCartney
Larry Busacca, Getty Images
loading...

The singer was anything but basic black in this figure-hugging, deep cut and majorly slitted Armani gown at the 2012 Grammys.

Rihanna Red Carpet 2012 Armani Grammys
Larry Busacca, Getty Images
loading...

She was golden and gloved in Givenchy in 2012.

Rihanna Red Carpet Givenchy 2012
Gareth Catermole, Getty Images
loading...

Rihanna doesn't exactly do fluffy and frilly and femme very often, but when she does, she knocks it out of the park, like she did with this architectural Stephane Roland number worn in 2009.

Rihanna Red Carpet 2009 Stephane Rolland
Michael Loccisano, Getty Images
loading...

RiRi was red hot in see-through Elie Saab in 2010.

Rihanna Red Carpet 2010 Elie Saab
Jason Merritt, Getty Images
loading...

This drapey, flowy, white Adam Selman frock was perfect for warm weather appearances back in 2012.

Rihanna Red Carpet White AdamSelman 12
Kevin Winter, Getty Images
loading...

This crimson Alaia gown, worn to the 2013 Grammys, was lovely, sprawling and a new standard for Rihanna.

Rihanna Alaia 2013 Grammys Red Carpet
Christopher Polk, Getty Images
loading...

She looked the part of a Southern belle in this lemon yellow, ruffly frock back in 2008. The color was to-die-for.

Rihanna 2008 Red Carpet Yellow BET Awards
Frazer Harrison, Getty Images
loading...

RiRi's blue frock at the 2008 Grammys was darling and not a look she would revisit often. But she was sassy in sapphire.

Rihanna Blue Red Carpet 2008
Frazer Harrison, Getty Images
loading...

Even though she was largely covered up in this second-skin, black croc Tom Ford dress at the 2012 Met Gala, it was one of her sexiest looks ever.

Rihanna Croc Tom Ford Red Carpet 2012 Met
Larry Busacca, Getty Images
loading...

Here is how it looked from the back, upping the sexy quotient.

Rihanna Croc Tom Ford Red Carpet 2012 Met Back
Larry Busacca, Getty Images
loading...

Ri went poufy and geometric in white Elie Saab at the 2010 Grammys.

Rihanna Elie Saab 2010 Red Carpet
Jason Merritt, Getty Images
loading...

She demonstrated that she was a goddess in olive green in 2007.

Rihanna Red Carpet 2007
Frazer Harrison, Getty Images
loading...

Bringing sexy back.

Rihanna Red Carpet 2007
Frazer Harrison, Getty Images
loading...

Shiny in slinky teal! We love the shaggy blonde locks, too.

Rihanna 2012
Samir Hussein, Getty Images
loading...

The 'Only Girl (In the World)' went the dominatrix route in Jean Paul Gaultier at the 2013 AMAs. It left little to the imagination.

Jean Paul Gaultier 2013 AMAs
Jason Merritt, Getty Images
loading...

The 2011 Jean Paul Gaultier Grammys gown was deceptively simple. It was totally see-through with its funnel shape.

Jean Paul Gaultier 2013 AMAs
Jason Merritt, Getty Images
loading...

This magenta Marchesa party frock was a shape and length RiRi doesn't normally favor, but the color and style were darling for her.

Rihanna Magenta Marchesa 2011
Fernando Leon, Getty Images
loading...

Wrapped in simple, white Adam Selman at the 2012 VMAs.

Rihanna VMAs 2012 Adam Selman
Christopher Polk, Getty Images
loading...

She was a cloud-like vision in this fluffy Marchesa confection in 2010.

Rihanna Marchesa
Ian Gavan, Getty Images
loading...

Head-turning in a soft, short and belted yellow frock in 2008.

Rihanna Yellow
David Livingston, Getty Images
loading...

A laser-cut, pink and black Marchesa was her choice at the 2009 AMAs, and it was unforgettable.

Rihanna Marchesa AMAs 2009
Jason Merritt, Getty Images
loading...

More From PopCrush