Keira Knightley  has built her reputation as the leading lady of our favorite period pieces, like Pride and Prejudice, Anna Karenina, and Atonement — but her red carpet résumé could easily rival her onscreen costumes. With a penchant for beautifully crafted, ultrafeminine wares from Valentino, Chanel, and Elie Saab , Keira might just have one of the loveliest red carpet histories in Hollywood (and she's only 29!). In honor of the very talented — and totally gorgeous — actress's birthday today, we're celebrating with a look at her best red carpet moments thus far. Keep clicking to see her top 17 looks.
Keira Knightley at the 2008 BAFTAs
In 2008, Keira stepped out at the BAFTAs in a delicate tiered Valentino Couture strapless gown.
Keira Knightley at the 2010 London Film Festival
At the 2010 premiere of Never Let Me Go, Keira balanced sexy and sophisticated in this body-conscious, cutout, and pearl-embellished nude Chanel sheath.
Keira Knightley at the 2011 Venice Film Festival
Keira had a modern-day fairy-tale moment in Valentino Couture at the Venice Film Festival in 2011.
Keira Knightley at the 2011 Toronto Film Festival
At the 2011 Toronto Film Festival, Keira looked lovely in a soft, nude Elie Saab  Couture dress.
Keira Knightley at the 2011 BFA London Film Festival
Keira hit the red carpet for the premiere of A Dangerous Method at the BFI London Film Festival in a sexier, cutout Roksanda Ilincic  sheath in 2011.
Keira Knightley at the Dangerous Method UK Premiere
The actress made a standout arrival at the A Dangerous Method premiere in London in a burgundy-hued Burberry  gown.
Keira Knightley at the 2012 LA Film Festival
A beautifully intricate Valentino made a lasting impression when Keira arrived at the 2012 premiere of Seeking a Friend For the End of the World.
Keira Knightley at the Anna Karenina UK Premiere
The actress had a memorable moment in a frothy Chanel Couture gown at the London premiere of Anna Karenina.
Keira Knightley at the 2012 Toronto Film Festival
Keira dazzled in a black embellished Elie Saab  gown at the Toronto Film Festival premiere of Anna Karenina.
Keira Knightley at the Anna Karenina New York Premiere
The actress chose a dark, floor-length Valentino gown to premiere Anna Karenina in NYC.
Keira Knightley at the Anna Karenina LA Premiere
The actress looked lovely in a strapless floral-trimmed Erdem  at the LA premiere of Anna Karenina.
Keira Knightley at the 2013 Venice Film Festival
Keira chose — what else? — a highly embellished Valentino gown for the Valentino Ball during the 2013 Venice International Film Festival.
Keira Knightley at the Jack Ryan: Shadow Recruit LA Premiere
For the LA Premiere of Jack Ryan: Shadow Recruit, Keira opted for a vintage inspired navy and white dress by Chanel.
Keira Knightley the 2013 Toronto Film Festival
Keira showed she wasn't afraid of color in her woodland print Mary Katrantzou  dress at the premiere of Can a Song Save Your Life? at the 2013 Toronto Film Festival.
Keira Knightley at the 2013 SeriousFun Gala
Keira made a splash (thankfully, this one not involving red wine ) when she wore her Chanel wedding  dress on the red carpet  of the SeriousFun London Gala in December 2013.
Keira Knightley at the Jack Ryan: Shadow Recruit UK Premiere
Go ahead and try not to smile when you take a look at the adorable black bow heels Keira paired with her Proenza Schouler  dress at the UK premiere of Jack Ryan: Shadow Recruit in January.
Keira Knightley at the Chanel Fall 2014 Show
OK, we know that this isn't technically a red carpet, but it might as well be! Keira appropriately turned to Chanel for a timeless black and white outfit, which she wore while attending the Fall 2014 runway show  during Paris Fashion Week