The Hamptons kept the party going this Summer with Free Arts NYC's Kidsfest — which drew stars like Rebecca Minkoff  and Michelle Smith — and Maker Magazine's Surf Lodge bash in Montauk, NY, where Nora Zehetner looked seasonably cool and casual. Meanwhile, the vibe was decidedly more glamorous as Princess Charlene of Monaco turned heads at the Red Cross Gala in a bright blue gown.
Back in New York City, design stars like Rachel Roy  and Timo Weiland  turned up for a chic screening of Jobs at MoMA. A look at all the stylish parties attended, here in the gallery.
Keri Russell  walked the Austenland carpet in a sleek, black pant ensemble.
Amber Heard was a standout in Vionnet 's draped blue design at the Paranoia premiere in LA.
At the LA premiere of Paranoia, Angela Sarafyan brought the drama in a sculpted, white Donna Karan  column.
Margot Robbie and Rachel McAdams  paired their white gowns (Ermanno Scervino and Roksanda  Ilincic, respectively) at the London About Time premiere.
Matthew Williamson 's iridescent cocktail dress was a pretty choice for Vanessa Kirby at the London premiere of About Time.
At the New York screening of Jobs, Rachel Roy  suited up in white.
At MoMA, Nicole Trunfio bared her midriff in a crop top and asymmetric bottom.
Timo Weiland  hit the black carpet for the MoMA Jobs screening in denim.
A well-suited Waris Ahluwalia caught a New York screening of Jobs.
Jessica Stam and Olivier Theyskens buddied up for the NYC G-Shock  event.
Giovanna Battaglia helped launch Saved Wines in head-to-toe black.
Hannah Bronfman accented her black pants with a bright green topper at the Saved Wines launch event.
Lake Bell arrived for the Saved Wines launch event at New York's Jane Hotel.
Linda Fargo attended the Monica Rich Kosann  boutique opening at Bergdorf Goodman  in a belted LBD.
Nate Berkus and Jeremiah Brent helped Monica Rich Kosann  fete her Bergdorf Goodman  boutique opening.
At the Young New York For Scott Stringer event, Stacey Bendet couldn't be missed in her bright orange design.
At the Maritime Hotel, Laura Brown, Leandra Medine, and Lea Chernikoff feted Young New York.
Prabal Gurung  got in on the Young New York festivities in a relaxed button-down.
Chloe Malle, Audrey Gelman, Juli Weiner, and Katherine Bernard hit the Young New York bash at New York's Maritime Hotel.
Lily Collins celebrated her Seventeen September cover in a midriff-baring ensemble.
Hannah Bronfman helped launch the True Religion  Fall campaign with Vogue in denim.
Genevieve Jones helped kick off the latest True Religion  ad campaign with Vogue.
Michelle Dockery arrived for a Downton Abbey press event in Elie Saab 's colorblock separates.
Lily Collins walked into the Good Morning America studio in a demure lace-trimmed LWD.
Simon Kneen got into the British spirit at the Banana Republic  and Issa  London kickoff event in New York.
Anna Wintour and André Leon Talley made an entrance on the red carpet for the premiere of The Butler.
Bright stuff coming through — Lily Collins lit up the stage in a yellow sheath and Casadei  heels at Apple's SoHo store.
In Sagaponack, Lauren Bush Lauren and Dylan Lauren took in the adorable fashions at the Ralph Lauren  Girls show.
Jessica Alba  brought her daughters out to the Ralph Lauren  Girls runway show and struck a pose with David Lauren.
Amanda Seyfried 's Gucci  gown sparkled plenty on the Lovelace red carpet.
Rebecca Minkoff  and Michelle Smith hit the Free Arts Kidsfest in the Hamptons in printed bottoms.
Amanda Seyfried  was white hot at the Las Vegas Lovelace premiere in a minimalist design.
At the Monaco Red Cross Gala, Princess Charlene of Monaco, Prince Albert II of Monaco, and Princess Caroline of Hanover were at their most elegant.
Nora Zehetner dined at The Surf Lodge in casual separates.
Kerry Washington wasn't to be missed in a bright print at the Disney and ABC Summer Tour.
Malin Akerman's red-hot jumpsuit helped kick off Disney and ABC's Summer TCA Tour.
Alexandra Richards DJed the Party Under the Stars in a black sheath.
At a Kick-Ass 2 press event, Chloë Moretz stood out in Viktor & Rolf 's stripes.