This week on Twitter, we caught a glimpse of celebrity Memorial Day celebrations — lounging poolside, traveling, and checking out the sights. We saw Olivia Wilde's charity work in Haiti, Rihanna touching up her hair, mermaid-style, and Victoria Beckham's little one taking a much-needed pool dip. Click through to see all of the fashionable moments! Read more

Katie Holmes stepped out in a hot black and white tuxedo to premiere The Decision, the short she made for John Frieda, in NYC last night. The piece is about a woman who "cheats" on her hair colorist, and Katie's own locks looked fantastic as she took the red carpet with the support of fellow stars including Allison Brie and Julie Benz. Bella has Katie's whole tongue-in-cheek film, which also Read more

Rachel Zoe threw on a Ports 1961 dress last night to attend Elle's Women in TV dinner at LA's Soho House, hosted by Joe Zee, with her adorable husband Rodger Berman. The super stylist was joined on the red carpet by How I Met Your Mother's Cobie Smulders, and a curve-showing Sofia Vergara, who just revealed that she's designing a line for K-Mart. True Blood's Sam Trammell balanced out the ladies, Read more

Last night was a disco glam sort of night. Armani Exchange and Elle magazine threw a soiree dubbed "Disco Glam" at the A|X store in West Hollywood. Stylish guests like Rachel Zoe, Gabrielle Union, and Eva Amurri mixed and mingled, and Dragonette performed — fun times. Elle's latest June issue, with Kristen Stewart on the cover, was also on hand for fashion-loving guests to peruse. Enter to see Read more

LA's Chateau Marmont hosted Jessica Biel, Justin Timberlake, Jon Hamm, Jennifer Westfeldt, Hailee Steinfeld and more for a private dinner thrown by Elle magazine's creative director Joe Zee and Tod's last night. Justin joined girlfriend Jessica for the chic soiree, but over the weekend he stepped out for a date with another lucky lady. Staying true to his word, JT accompanied Corporal Kelsey Read more

With Heidi Klum, Nina Garcia, and Elle's Joe Zee in the front row, former Project Runway winner Christian Siriano sent out his strongest collection to date, one that balanced his flair for dramatic dresses with easy, seriously wearable separates. Yes, there were frothy cocktail dresses and massive, tulle-laden gowns made for the red carpet. But the pleasant surprise came via sleek silk maxi Read more