Ashlee Simpson And Pete Wentz 'Expecting A Boy' 7/2/08

Celebrity parents-to-be Ashlee Simpson and Pete Wentz have prompted speculation they are expecting a son, after embarking on a shopping spree for baby clothes.

The couple announced Simpson's pregnancy last month (Jun08), just weeks after their wedding ceremony in California. They have refused to reveal the unborn baby's gender - but staff at Los Angeles boutique Petit Tresor claim they dropped big hints it will be a boy.

A source tells OK! magazine, "Almost everything (they picked out) is blue." The couple's shopping list reportedly included a bib with "hunk" written on it, and a number of other clothes. The source adds, "They made it very clear that it was a boy."