JANUARY 4--While we're counting the hours until the annulment, Britney Spears is, at press time, a married woman. The singer, 22, yesterday got married in Las Vegas to one Jason Allan Alexander (no, not Costanza), a childhood pal from Kentwood, Louisiana. The lovebirds were hitched at 5 AM at the Little White Wedding Chapel, the famous Strip nuptial warehouse where you can get married at a drive-up window or, if you're on a budget, can opt for the $179 economy package for you and your 1-25 guests. According to press reports, Spears was walked down the aisle by a bellman from the hip Palms hotel. Below you'll find a copy of the couple's marriage application filed with the Clark County Marriage Bureau. The license, for those keeping track at home, cost $55. (1 page)