'Mad Men' cast glams up Hollywood for big screen Season 5 premiere

"Mad Men" is back. Or will be on March 25. But Wednesday, the show's stars glammed up Hollywood's Cinerama movie theater for a big screen premiere of the Season 5 opener.

Jon Hamm arrived with longtime girlfriend (and "Friends with Kids" director/co-star Jennifer Westfeldt) on his arm. His on-screen ex, January Jones, accented her new pink-streaked hair with a retro body-hugging black knee-skimming dress. We like the neckline, but aren't sure what's going on at the midriff or the hemline.

Both Elisabeth Moss and Christina Hendricks are out of the country filming other projects and weren't on hand for the event. But plenty of their co-stars were -- including Jessica Pare, Alison Brie and John Slattery were.

Jessica Pare: