No wonder they're all smiles! Ashlee Simpson and Pete Wentz flew into New York City's JFK airport yesterday after their first week of wedded bliss. The newlyweds spent their honeymoon basking in the sun and surf of the Caribbean. During their trip, the tattooed rocker and the reportedly pregnant singer — who was clad in a black bikini — took in some serious R&R time on a floating mattress in the crystal waters of the Caribbean Sea. Nice!