For the Oscars, the star was stunning in a pink gown with a larger-than-life bow.
For the Gucci Cruise 2019 show, the star wore the perfect look for a luxury vacation, completed by a collared mini dress and embellished sandals.
The actress attends the 2018 SAG Awards in a pale pink dress with silver detailing along the sides and sleeves.
The Ladybird actress arrived at the 2018 Critics' Choice Awards in a bedazzled, backless Michael Kors stunner. Although the flesh-tone color of the dress could have washed her out, the bold deep lip brought her to life.
Saoirse Ronan! Not only for her turn in Ladybird, but because her one-sleeve Atelier Versace dress was also a winner.
Not only did the actress make a bold style statement at the 2018 Palm Springs International Film Festival Awards Gala, but her Gucci dress served as major inspiration for Valentine's Days to come.
In true Rodarte fashion, Ronan was both feminine and dark in this floral, lace ensemble at the 2018 Gotham Independent Film Awards.
You don't always need to wear a full-on gown on a red carpet. The actress wore a Teresa Helbig design to the HFPA and Instyle Celebration of the 2018 Golden Globe Awards.
This Ralph & Russo sequined gown the actress wore to the 9th Annual Governors Awards would have been just as perfect on the Oscars red carpet. The emerald-green statement earrings were definitely a nice touch.
The actress proved you can still do sophisticated in a Alessandra Rich mini while attending the On Chesil Beach London Film Festival premiere.
Saoirse perfectly complemented the rose backdrop at the 2016 Tony Awards in a pale-pink gown with a cutout at the waist.
The contrast between the stark-white dress and feathered details made this Christopher Kane creation one for the Met Gala books.
The actress was glimmering in sequined Calvin Klein gown with a plunging neckline at the 2016 Vanity Fair Oscars party.
You don't always have to wear a suit to mean business in the boardroom. If you want to be fashion-forward and professional, take a cue from the actress at the 88th Annual Academy Awards Nominee Luncheon.
While Saoirse looked angelic in a white frock at the 2016 Santa Barbara International Film Festival, it's her feathery footwear that really did it for us.
The actress looked like a style confection wearing a Michael Kors gown, Forevermark Diamonds and Giuseppe Zanotti heels.
At the 2016 Golden Globes, it was literally like Saoirse arrived via cloud, wearing an ethereal Saint Laurent gown with the longest train ever.
What we've gleaned from the star's many red carpet photos: a) She looks good in white and muted pastels. b) She has a penchant for accent feathers.
The star wore a mishmash of prints and patterns on one single dress to the 2016 Palm Springs International Film Festival Awards Gala, and it worked!
Gucci, even in its most pink, sweetest form, still somehow looks edgy on the actress.
Young and fresh-faced, the now-Golden Globe winner rocked a lace frock to the The Twilight Saga: Breaking Dawn - Part 2 premiere.