Dianna Agron

US Glamour's second-ever "These Girls" event, which benefits the Urban Arts Partnership, brought out plenty of funny ladies to take the stage at Joe's Pub in NYC last night. Amy Poehler was accompanied by Emma Roberts, Alexa Chung, Dianna Agron, Girls star Zosia Mamet, and more to perform both inspiring and hilarious personal essays ranging from sex and awkwardness to the hardships of growing up. Emma, who departed the event in the company of her boyfriend, Evan Peters, hit the stage to address her attempt to ditch Hollywood in pursuit of normal college life, revealing, "I was so busy pretending to experience everything [on screen], I forgot to experience real life." Amy was back for a second time after participating at the inaugural "These Ladies" show in October, when she was accompanied by Olivia Wilde, America Ferrera, Rashida Jones and Aubrey Plaza.

Zoe Saldana, Reese Witherspoon, Naomi Watts and Nina Dobrev were all on hand to support their respective stylists for The Hollywood Reporter's 25 Most Powerful Stylists event today. Kaley Cuoco, Abbie Cornish and Dianna Agron were also in attendance to celebrate. The annual luncheon, which was held at LA's SoHo House, was hosted by Jimmy Choo and honours the most successful celebrity stylists of the year. This year's list includes heavy-hitters like Brad Goreski, L'Wren Scott and Rachel Zoe, who was recognised for dressing Jennifer Lawrence, Anne Hathaway and Jennifer Garner this awards season.

The actresses all arrived in style, and most paired their pretty daytime looks with Jimmy Choo accessories. Reese posed with her stylist Leslie Fremar, who also dresses stars like Charlize Theron and Julianne Moore, while Kaley Cuoco stuck close to her fashion guru, Tara Swennen, who counts Kristen Stewart as one of her clients. Nina, who wore a red Max Mara jumpsuit, chatted with Zoe Saldana during the event, and shared photos of herself at the event on her Twitter page, including one with stylist Ilaria Urbinati.

The 2013 Screen Actors Guild Awards are this Monday, and we'll be celebrating 19 years of the show's glamorous red carpet. Before we see how our favourite stars are doing their hair and makeup this year, though, take a look back at some of the most memorable beauty moments from years past. Whether they inspired you or made you do a double take, these aren't looks you're likely to forget. Click through the gallery, then be sure to catch all of Monday's SAG Awards red-carpet action right here BellaSugar!

— Additional reporting by Kaitlyn Dreyling

We're always treated to a bevy of beauties showing their best hair and makeup angles, and this week was a shimmery, shiny version. From Jessica Biel's stunning silver smoky eye to Dianna Agron's all over shimmer, these ladies' beauty looks had us keen to try something a little fresh. We fell hard for Olivia Munn's perfect hot pink lip (we've found a shade that's even better!) and Taylor Swift's golden glow . . . And then there's Kristen Stewart with hair so good, even she's smiling! There's a whole lot more to see (and steal!) in here, so get clicking through our gallery of the Top 10 beauty looks this week.

From the London world premiere of Les Misérables to New York's fashion-forward screening of HBO's In Vogue: The Editor's Eye, there's been more than a few notable celebrity beauty looks to surface this week. Anne Hathaway is rocking her pixie cut with more edge, Amanda Seyfried looked like a screen siren beside her, and Kerry Washington stepped out with a fringe for The Hollywood Reporter's Power 100: Women In Entertainment Breakfast yesterday. But there's two more looks we're loving, so click through to zoom in and snoop the celebeauties.

Sarah Jessica Parker, Dianna Agron and Christina Ricci hit the red carpet at the Metropolitan Museum of Art in NYC last night to celebrate the premiere of HBO's In Vogue: The Editor's Eye. Dianna donned a printed dress from Bottega Veneta, while Sarah Jessica paired a vintage dress with a blue velvet overcoat.

The celebs were joined by a host of big fashion personalities, including Vogue's Anna Wintour and other senior fashion editors, as well as designers Tory Burch, Vera Wang, Marchesa's Georgina Chapman and Keren Craig, and Derek Lam. Models Joan Smalls, Karen Elson, Arizona Muse and Karlie Kloss turned out as well. (Have a look at the trailer for In Vogue: The Editor's Eye.) Karlie, for one, was excited to see the finished product. She tweeted just before arriving at the Met, "Ready to see the amazing editors talk about bringing the stories come to life!"

A party is a party, but a Vogue party is one where the guest list reads like a who's who of fashion's most famed insiders. Last night proved to be just that when the style crowd gathered to watch HBO's documentary, In Vogue: The Editor's Eye. The fashion doco will air in the States on Dec. 6, but we'll have to make do with snooping the party pics. The style world elite like Jenna Lyons, favourite faces like Joan Smalls, and celebrity trendsetters like Sarah Jessica Parker, joined the editrix in chief to fete the film at the Met. Obviously, our attention is on what everyone was wearing — like Joan Smalls showing off her pins in those metallic shorts, or Jenna Lyons exhibiting her signature — and spot-on — mix of tomboy-glam. Click on to see who else joined Anna Wintour last night; then tell us your pick for best dressed in the comments.

The celebrities of the fashion and beauty world had us yearning for summer this week as they taunted us with beautiful summer snaps via Instagram, Twitter and Facebook. Whether they were partying it up with fellow fashion icons like Christine Centenera and Kate Bosworth in Sydney, stretched out on a speedboat like Bar Refaeli, striking a pose like Miranda Kerr (for Italian Vogue, if you don't mind) or getting proposed to in one of the coolest ways ever, we couldn't get enough of keeping up with these social media-savvy stars. That's just a fraction of what we saw, though — get clicking through the gallery to see everything else that went on this week!

It was go, go, go for movie stars, fashion icons, models and singers alike this week as they came out in force around the globe. Jennifer Lopez took her best accessory — gorgeous daughter Emme — along for the ride when she jetted off to Paris to catch the end of Fashion Week, Aussie model Erin McNaught showed off a daring new 'do when she made an appearance at the opening of Topshop in Sydney and Jessica Alba was honoured at the Environmental Media Awards in Los Angeles. Of course, that's not all — there were plenty of Fashion Week sightings, movie premieres, celebrity couplings and more to keep you more than entertained. Flick through the gallery to catch up on the super busy week that was!