Pregnant teen star Jamie Lynn Spears has given away the biggest hint she is expecting a baby boy - after spending $7,000 (GBP3,500) on a blue nursery for the tot. The 16-year-old has selected an ocean-themed room for the baby, after picking it out at luxury Hollywood baby boutique Petit Tresor, store sources tell The site claims auntie-to-be Britney has also been snapping up gifts for her new niece or nephew.