Emmy Rossum Welcomes New 'Shameless' Co-Star Dermot Mulroney in the Best Way Ever

Emmy Rossum pairs her cute white dress with a bright red bag while running some errands on Wednesday afternoon (July 16) in Beverly Hills, Calif.

According to Deadline, the 27-year-old actress just gained a new co-star!

That’s right, Dermot Mulroney has officially joined the cast of Shameless for the upcoming fifth season in a season-long story arc as “ex-bad boy and recovering addict Sean Pierce, Fiona’s (Rossum) new manager at Patsy’s Pies.”

Emmy later tweeted, “On set, I snap my fingers & whisper-sing “wishing and hoping and thinking and praying…” Dermot Mulroney doesn’t think its as funny as I do,” referring to his famous role in My Best Friend’s Wedding.

Also pictured below: Emmy rocking a “New York” tank while leaving the gym after a workout.

FYI: Emmy is wearing the Elizabeth and James Emi dress and Textile Elizabeth and James New York tank with an Olivia Burton watch.

25+ pictures inside of Emmy Rossum doing some errands in Beverly Hills…