News Awards & Events Grammys The Night's Biggest Fashion Trends By InStyle Editors InStyle Editors Facebook Instagram Twitter Our editors and writers comprise decades of expertise across the beauty, fashion, lifestyle and wellness spaces in print and digital. We prioritize journalistic integrity, factual accuracy, and also having fun with every story we share. InStyle's editorial guidelines Updated on February 27, 2015 @ 11:32AM Pin Share Tweet Email Trending Videos Photo: Steve Granitz/WireImage The Night's Biggest Fashion Trends 01 of 09 Taylor Swift Fernando Allende/Broadimage Taylor Swift styled her long blonde locks into a braided updo to show off the criss-cross open back of her J. Mendel goddess gown. 02 of 09 Rihanna Jason Merritt/Getty Images The Barbadian beauty picked up her seventh Grammy in this scarlet Azzedine Alaia creation laced up the back with sheer ribbons. 03 of 09 Alicia Keys Gilbert Flores/CelebrityPhoto.com Grammy Performer Alicia Keys also worked Alaia. Hers boasted a structured mermaid skirt and a leather top with a keyhole cutout in the back. 04 of 09 Carrie Underwood Steve Granitz/WireImage Carrie Underwood -who took home the Grammy for Best Country Performance-kicked off the night's peek-a-boo trend in a Roberto Cavalli dress with sheer lace overlay. 05 of 09 Faith Hill Jordan Strauss/Invision/AP) Faith Hill gave us a peek in J. Mendel's licorice mini with a deep cut into its sweetheart neckline and sheer sleeves. 06 of 09 Jennifer Lopez Lester Cohen/WireImage Presenter Jennifer Lopez had moment reminiscent of Angelina Jolie at the Oscars in her one-shoulder Anthony Vaccarello gown with an up-to-there slit. 07 of 09 Florence Welch Kevin Mazur/WireImage The color of the year was also the color of the night: emerald. Nominee Florence Welch did it proud in a custom Givenchy gown with spikes up the bodice and along her shoulders. 08 of 09 Katy Perry Jason Merritt/Getty Images Grammy nominee Katy Perry-who brought Girls star Allison Williams as her date-flaunted her assets in Gucci's pale jade column with an embellished floral collar. 09 of 09 Solange Knowles Steve Granitz/WireImage We're not in Kansas anymore: Solange Knowles' took a trip to Oz in a glittering gown with cap sleeves and a super-slit-a pop next to sister Beyoncampeacute;'s structured black and white look.