Who says dressing up has to be a highbrow activity? This week the stars were all about keeping fashion fun. While Rihanna  wasn't afraid to take a spill in skis, Lupita Nyong'o spread her wings with a butterfly headpiece.
After all, though great style is serious business, it's nice to see Hollywood still has a sense of humor. See this week's best photos, and don't forget to share the love and follow POPSUGAR Fashion on Instagram , Facebook , and Twitter !
Lupita had a hair-raising reaction to this butterfly headpiece.
From Sarah Jessica Parker 's flirty floral dress to Lady Gaga 's full-body fishnet, this group tried out every style.
Emmy looked chic at the beach in this white one-piece.
Nicole was one lucky lady.
Vanessa's boho style was perfect for life on the road.
Lena wasn't afraid to wear her show on her shirt.
Rita went for a dramatic look in thigh-high sandals and a fur coat.
Rihanna  may have taken a spill, but at least she did it in style.
Taylor and Lorde coordinated their outfits for a day at the beach.
Lorde rocked this dramatic layered look in Stockholm, Sweden.
Hailee shared these chic snapshots from a recent photo shoot.
Joy was the most stylish snowboarder we've ever seen.
This dazzling ring was Kerry's brightest accessory at the NAACP Image Awards.
Olivia showed off her baby bump in a bright maxi dress.
Mindy mastered layering in her bright blue-and-green ensemble.
Sophia stood out in the crowd in a Winter white dress.
The (modern) family that dresses together stays together.
Kat was dressed to the nines with costar Beth Behrs.