1. Rooney Mara’s Bangs
When: First cut for 2011’s The Girl With the Dragon Tattoo, her look engendered a press mania that culminated at the Oscars on Feb. 26.
Why it matters: Mara’s stark dark hair sparked a fringe frenzy.
-
-
2. Scarlett Johansson’s ‘Hitchcock’ Blond
When: For the movie, out Nov. 23.
Why it matters: Her retro-chic helmet transformed her from hipster bombshell to 1960s Janet Leigh.
-
3. Anne Hathaway’s Pixie
When: For Les Miserables, out Dec. 25.
Why it matters: Her dramatic yet vulnerable chop started a trend among young Hollywood actresses.
-
4. Charlize Theron’s Modern Flapper
When: The Golden Globes on Jan. 15.
Why it matters: Her look singled her out as the night’s most glamorous.
-
5. Hollywood’s Bunheads
When: Various.
Why it matters: Buns have become the reigning chic hairstyle among Hollywood A-listers.
-
6. Jennifer Lawrence’s Dramatic, Neo-Gothic Look
When: Sept. 8 at the Toronto International Film Festival.
Why it matters: Her locks, darkened for The Hunger Games: Catching Fire, revealed a grown-up, glam side.
-
7. Jessica Pare’s ’60s Seductress
When: Season five premiere of Mad Men on March 25.
Why it matters: Her sultry-songstress look instantly became a watercooler topic.
-
8. Gwyneth Paltrow’s Minimalist Chic
When: The Oscars on Feb. 26.
Why it matters: She redefined Oscar glamour to be clean and modern.
-
9. The Natural Beauty of ‘Downton Abbey’
When: The PBS drama picked up steam with its second season, which debuted stateside Jan. 8.
Why it matters: The no-makeup look ignited an obsession among the fashion crowd.
-
10. Kristen Stewart’s Classic Updo With a Twist
When: At a May 29 Los Angeles screening of Snow White and the Huntsman.
Why it matters: Her look combined punk and polish.
-
11. Rose Byrne’s Bob
When: The SAG Awards on Jan. 29.
Why it matters: She gave new life to Michelle Pfeiffer’s 1983 Scarface ’do.
-
12. Drew Barrymore’s Ombre Hair
When: The then-engaged actress rocked ombre to the extreme on The Tonight Show in February.
Why it matters: Young Hollywood took notice and soon followed. (Clockwise from top left: Barrymore, Jessica Biel, Rashida Jones and Rachel Bilson).
-
13. Keira Knightley’s Romantic Palette
When: For Anna Karenina, out Nov. 16.
Why it matters: Her cheeks and lips are era-accurate but timeless and likely to resonate with moviegoers.
-
14. Rihanna’s Chameleon Hair
When: Various.
15 Amanda Seyfried’s Veronica Lake Locks She continues to set trends, not follow.
-
15. Amanda Seyfried’s Veronica Lake Locks
When: The 16th annual Hollywood Film Awards on Oct. 22.
Why it matters: She shows that a young actress can keep it classy.
-
16. Katy Perry’s and Kelly Osbourne’s Hair Color-Outfit Matches
When: Sept. 23 Emmys for Osbourne, March 3 at Paris Fashion Week for Perry.
Why it matters: Hair color dictated wardrobe choices, taking matching to a new level.
-
17. Sarah Jessica Parker’s Low-Key Glamour
When: The Feb. 8 amfAR Gala in New York.
Why it matters: Every actress aspires to make it look this easy.
-
18. Emma Stone’s Bright Blond Hair
When: For summer release The Amazing Spider-Man.
Why it matters: Stone made platinum modern and worked it both on and off-screen.
-
19. Dianna Agron’s Grown-Up Goddess Look
When: The Met Ball on May 2.
Why it matters: She showcased a more sophisticated side and expanded her reach beyond Glee, looks-wise. (To get her look, makeup artist Georgie Eisdell used such Chanel products as a rust-hued shadow “Ebloui” on the lid and under the eye and a dark charcoal shadow “Mirifique” as liner, finishing with black Inimitable mascara for megawatt lashes.)
-
20. Connie Britton’s and Hayden Panettiere’s Southern Belles
When: ABC’s Nashville premiere on Oct. 10.
Why it matters: The freshman series promises to revive the sun- kissed, big-haired look.
-
21. Zooey Deschanel’s Adorkable Manicures
When: The Golden Globes on Jan. 15 and the Emmys on Sept. 23.
Why it matters: Her manis single-handedly set off a social-media storm.
-
22. Ginnifer Goodwin’s Retro Cool
When: Sept. 23 Emmys.
Why it matters: Her edgy Twiggy-inspired makeup had all eyes on her.
-
23. Michelle Williams’ Marilyn Impersonation
When: The Feb. 15 Paris premiere of My Week With Marilyn.
Why it matters: The pixie-ish Williams demonstrated her ability to look like the mesmerizing siren.
-
24. Jennifer Lopez’s ‘American Idol’ Looks
When: March 15 and March 22.
Why it matters: Idol not only revitalized J. Lo’s relevance but also showcased the former judge’s style versatility.
-
25. Pop Stars’ Pop of Lip Color on Album Covers
When: Various.
Why it matters: In 2012, songstresses highlighted their moneymakers — aka their mouths — on their album covers.