The combination of sweltering temperatures and unbearable humidity is the leading cause of women giving up on their hair around the globe. But throwing hair into a pony is anything but a cop-out — with just a smidgen of extra effort, the sporty style can be superglam . Ariana Grande's high, voluptuous ponytail is a key example; by loosely curling her hair for a boost in body and hiding the hair elastic with some extra strands, she's able to rock a look that's doubly cool. Find your Summer hair inspiration when you scroll down.
Source: Getty / Jamie McCarthy 
At the Kopparberg Urban Forest launch party, Kelis rocked huge, luxurious hair with a matte red lip.
As she received the Madrid Pride Award, Austrian singer Conchita wore her hair in loose, flowing waves (and her contour game  was on point).
On MTV's Total Ariana Live in honor of her new single "Break Free," Ariana complemented her glowing skin with a creamy nude lipstick.
Lily knows how to brighten things up without going overboard. At the Serpentine Gallery Summer Party, she lined her lower lid with green and blue glitter to play up her vibrant hair but toned down the rest of her look with a nude lip.
At the Serpentine Gallery Summer Party, Alexa appeared to keep her face completely bare except for orange-red lipstick, which accented her beautiful baby blues.
The flawless Naomi let her sultry eyes smolder with subtle smoky shadow at the Serpentine Gallery Summer Party.
Keira went with a mod look at the Serpentine Gallery Summer Party, pairing bold black eyeliner with a frosty pink lip.
Cara let those famous brows be the focus of her look at the Serpentine Gallery Summer Party. She pulled her hair back into a half-up, half-down style.
Taylor was spotted in New York City in her signature girlie, retro style, which she capped off with an expertly applied matte red lip (loving that cupid's bow!).
Kelly highlighted her new tattoo with a swirly mohawk hairstyle when she visited the Sirius XM Studios.
Kate wore her signature eyeliner and soft-pink blush when she visited an M-Pact Plus counseling program event in London.
At the 2014 Ignite Gala, Lucy let her pretty freckles peek out through supersheer pink blush.
Melissa's long, piece-y bangs drew attention to her smoky hazel eyes at the LA premiere of Tammy.
Lucy showed off her perfect brows and luminous skin in New York City.
The long bangs on Jennifer's pixie drew attention to her bold eyeliner and shimmery champagne shadow at the BET Awards.
Kerry's subtle pinky-peach lips and cheeks were a sweet complement to her floral gown at the BET Awards.
Nicki continued showing off her softer side  with natural-looking makeup and loose waves at the BET Awards.
Gugu's pretty updo let her glowing skin and subtle bronze smoky eye be the main attractions at the BET Awards.
We love the asymmetry of Ledisi's blond and brunette twists at the BET Awards.
Rita paired a matte red lip with a sprinkle of gold glitter on her cheekbones at the Glastonbury Festival.
At the iHeartRadio Ultimate Pool Party, Iggy combined our favorite Summer hairstyle — the braid — with a pompadour  and pony for a fresh, edgy look.
At the Glastonbury Festival, Lily's gradient hair in hues of orange, pink, and purple would have made any anime character jealous.