After announcing her engagement to Fall Out Boy's Pete Wentz yesterday, Ashlee Simpson is receiving a big thumbs-up from bombshell big sister Jessica. "My sister is overflowing with joy," Jessica tells Us Weekly. "Pete is an incredible soul. They naturally bring out the best in each other. I couldn't be happier."

Even papa Joe seems to agree with Jess on this one, giving Wentz high marks for old-fashioned courtesy. "Pete did ask me," says Joe. "I told him that I would be honored to have him as part of my family." Will Tony Romo, Jessica's new beau, be next in line to join the Simpson clan?