Newlyweds Pete Wentz and Ashlee Simpson have a signed a prenuptial agreement, a new media report claims.

According to OK Magazine, the father-of-the-bride, stage dad Joe Simpson, was insistent that Ash and Pete get their finances in order before walking down the aisle, particularly since big sis Jessica was reportedly forced to fork over more than $10 million following her divorce for singer Nick Lachey.

Ashlee, twenty-three, married Fall Out Boy rocker Wentz in sunset ceremony at her parents’ Encino, California estate on Saturday. The singing star, who is reportedly four months pregnant with the couple’s first child, is worth about $6 million.