Last night's iHeartRadio Music Awards turned out to be a feast of extreme beauty looks. Rihanna  attended with a bantu-knotted hairstyle  and green lipstick . . . yep, green. Jennifer Lopez  hit the stage with a smoky eye that went beyond black. Selena Gomez  might have been the tamest of the bunch with a straight style and soft makeup. Scroll through to see even more looks from the iHeartRadio red carpet, plus more head-turning celebrity beauty moments from this week.
At the iHeartRadio Music Awards, Selena stuck with superstraight strands. However, she added a bit of excitement with a rosy pink shadow and bronzed complexion.
At the iHeartRadio Music Awards, Jennifer ditched her typical curls for a sleek style, and her eye look was a blackout makeup moment.
Rihanna  channeled Gwen Stefani  at the iHeartRadio Music Awards with an emerald lipstick and bantu-knotted hairstyle.
For the iHeartRadio Music Awards, Gwen showed of a platinum blond lob and her signature red lip.
Hilary opted for a messy topknot and bright orange lip for the iHeartRadio Music Awards. This look is the perfect inspiration for a sunny Spring Saturday.
Ashley went with an edgy, wavy hairstyle and soft, smoky shadow at the iHeartRadio Music Awards. Her lip stayed nude to balance out the dramatic eye makeup.
Emma wore her shoulder-length style in a chic updo for the Fendi and Elle magazine party.
For her stop by the 106 & Park show, Rita wore a piecey bob and a matte red lip (of course).
Cara decided to play up her eyes with a chic winged liner look, which she paired with a high ponytail.
Kate was spotted in NYC wearing a red lip and red dress, proving that the shade is truly timeless.
Alexa has mastered the art of casual cool beauty. This coral lip and tousled waves combination at the FIT runway show was a prime example.
Reese rocked tousled waves for the Colleagues' Spring Luncheon in Beverly Hills, CA. She added a bit of silvery eye shadow to her look to match her blue dress.
Glowing skin and sleek hair made Naomi look ethereal at the launch of the Kate Moss  for Topshop collection.
At the launch of the Kate Moss  for Topshop Collection, Cara wore her hair in a double-braided look. It was part headband plait, part plaited topknot.
Suki pulled off the classic rockstar style at the Kate Moss  for Topshop Collection launch. Her hair was roughly blown to one side with tons of texture, while her eyes were circled in kohl eyeliner.
Sienna embraced her boho-beauty persona with carefree waves and a bronzed complexion at the launch of the Kate Moss  for Topshop Collection.
Sarah Jessica Parker
SJP added a touch of texture to her sleek strands for the AOL NewFronts in NYC.
At the AOL NewFronts, Zoe wore her standard beauty look: a red lip, winged eyeliner, and high-shine waves.
Nicole is still rocking lavender hair color, and she accented the hue with glossy lids and lips at the AOL NewFronts.
For the Time 100 Gala, Amy stuck with a basic beauty palette of corals and creams.
Getting flawless waves like Carrie's at the Time 100 Gala is easy with the help of a curling iron  (or a team of seasoned professionals).
For the launch of Victoria's Secret's new scent, Karlie sported a makeup palette of pinks and showed off her grown-out bob.
Sarah Jessica Parker
At the New York Pops Birthday Gala, Sarah Jessica played up her ombré hair color with a sleek, straight style.
Typically Hailee sticks to a neutral palette, but for the Breast Cancer Research Foundation Hot Pink Part, she pumped up her look with a bright fuchsia lip.
Although we love Rihanna 's more dramatic looks, this nude makeup and curly jet-black hair combination from her day in NYC is a look we could get used to.
Sophia brought the drama to the National Dance Institute Gala with a sideswept hairstyle and vampy aubergine lip color.
Kelly showed off her shaved hairstyle at the Radio Disney Music Awards this weekend by wearing her lavender strands in an edgy updo.
At the Taste For a Cure gala, Lea decided on a vintage beauty theme. She wore her hair swept over one shoulder, dramatic winged eyeliner, and a red lip.
We can't decide which side of Rita's look we like more: bun or braid? She rocked this double-sided style at Paper magazine's Beautiful People Party.
Keira went for relaxed waves at the Begin Again premiere during the Tribeca Film Festival. Makeup artist Kate Lee used the purple shadows in the Chanel Quadrille Shadow Palette  ($59) to highlight her brown eyes.
Eva decided to go sleek and straight for the Tribeca Film Festival. She added oomph to her style with an inky-black smoky eye.
Once again, Anne has found a creative way to style her grown-out pixie cut . For a recent Rio 2 screening, she went with a series of twists for the perfect short-hair updo. Consider us impressed!
The side view.
Claire highlighted her eyes at the Variety Power of Women event with a high dose of eyeliner.