Jennifer Lopez and Marc Anthony reaffirmed their marriage by renewing their wedding vows in Las Vegas.

The super secret and small ceremony was a spur-of-the-moment decision, after partying at various nightclubs around town including Pure.

After Pure, they dialed up a minister (in a 24-hour town, anything is possible), then headed upstairs to their private penthouse suite at Caesars Palace, with two friends in attendance.

The singing couple then renewed their vows at 3:15 a.m. early this morning.