Celebrity Bump Watch

From Nicole Kidman – who just revealed her pregnancy – to Christina Aguilera, check out who's due in 2008!

JESSICA ALBA

Three weeks after announcing her pregnancy, Alba was the portrait of casual chic in leggings and flip-flops while strolling in Beverly Hills on Jan 2. The actress and fiancé Cash Warren are expecting their first child together in "late spring, early summer," her rep confirmed exclusively to PEOPLE.