Dominic Cooper

Jennifer Garner made a red-carpet appearance with the cast of Butter at the NYC premiere last night. She chose a strapless Gucci gown for the occasion, which came after attending a press conference earlier in the day. Jennifer had Ashley Greene; Olivia Wilde, in Alexander McQueen; and Ty Burrell by her side for both events. Costar Alicia Silverstone missed out on this afternoon's promotional stop but joined them for this evening's screening and later at the afterparty sponsored by Appleton Estate Rum. Jennifer, Alicia, and Olivia mingled with Harvey Weinstein at Double Seven, where they celebrated their premiere.

While Jennifer is working in NYC, her husband, Ben Affleck, is on the West Coast. He attended a charity dinner on Monday night and was spotted grabbing lunch on his motorcycle yesterday.

Michelle Williams went with a delicate Erdem dress and Roger Vivier shoes for a screening of My Week With Marilyn in NYC on Sunday evening. She was joined by a few costars for the event, though all eyes were on Michelle on the red carpet and her embodiment of Marilyn Monroe in the film. Michelle debuted My Week With Marilyn in LA last weekend and she'll be making her promotional tour international when she is honored by Queen Elizabeth II at a special palace premiere.

Michelle recently spoke about what drew her to Marilyn, admitting that she knows she's not the only person drawn to the icon. Michelle said of Marilyn, "I have always been drawn to Marilyn, but that doesn’t make me special in any way. She has that magnetism and that draw for so many people, so I read about her when I was young, devouring biographies. I’m most interested in her life before she became Marilyn. For me, the interest wasn’t so much in this larger-than-life personality.”

My Week With Marilyn comes out Nov. 23 and get in on the excitement by entering TresSugar's $1,000 Tiffany's gift certificate and Chanel No. 5 giveaway for the movie.

Chris Evans teamed up with his Captain America castmates last night for their premiere at LA's El Capitan theater. The superhero movie also features Sebastian Stan, Hayley Atwell, and Dominic Cooper. Some of Chris's high-wattage costars from his next project The Avengers also walked the red, white, and blue carpet to drum up buzz for their film. Robert Downey Jr. and Samuel L. Jackson attended the debut, as did Chris Hemsworth, with wife Elsa Pataky by his side. We spoke with Chris Evans, who looked dapper in a suit and tie, as he made his way into the movie. He told us he was most intimidated to meet and work with Robert on The Avengers, which brings together many of Marvel's most beloved comic book characters, including Captain America, Iron Man, and Thor. Chris also admitted he hated training for Captain America when we caught up with him last weekend, because he had to eat constantly to bulk up and work out with a "relentless" trainer, but clearly the effort paid off!

Amanda Seyfried and Dominic Cooper were spotted together at Barneys in LA yesterday. The duo, who met on the set of the 2008 movie Mamma Mia, had an on-again off-again relationship for two years. They seem to still be on good terms despite a split in 2010, and Amanda moved on to another high-profile romance with Ryan Phillippe. Amanda and Ryan called it quits for good recently after around eight months of dating. London-based Dominic was in Hollywood so that he could attend a gala premiere of The Devil's Double as part of the Los Angeles Film Festival, and Amanda was spotted leaving the afterparty too!

There's a British invasion happening in Hollywood at the moment. Earlier this week we learned that English actor Henry Cavill would be starring as Superman in the reboot, The Social Network star Andrew Garfield is heating up every award season red carpet, and Tom Sturridge stars opposite Rachel Bilson in this week's release, Waiting For Forever. They're just a handful of the handsome guys from overseas who are making a big impact stateside. Check out these up-and-coming British actors!