Rory Gilmore is offically all grown up! Alexis Bledel and her Mad Men co-star Vincent Kartheiser are engaged, Bledel's rep confirms to US Weekly. The couple began dating almost a year ago, and a friend tells US: "Vincent proposed a few weeks ago. She's been wearing her ring. It's huge!" Bledel was most known for dating her Gilmore Girls love interest Milo Ventimiglia for more than three years.