Britney engaged to dancer

Pop beauty Britney Spears is reportedly marrying her dancer beau Kevin Federline despite his pregnant ex-girlfriend Shar Jackson's angry protests.

The Toxic singer - whose marriage to pal Jason Alexander was annulled after just 72 hours earlier this year - is allegedly flaunting Federline's two- carat diamond engagement ring even though actress Jackson is eight months pregnant with their second child, according to British newspaper the Daily Star.