The Transformers star is off and running during a workout in L.A. Plus: Ashlee Simpson-Wentz, Brad Pitt, Britney Spears and more

ON THE GO

A day after dining together at the Eiffel Tower – with big brother Sean Preston, 3½ (not pictured) – Britney Spears and son Jayden James, 2½, stick together while leaving their Paris hotel on Wednesday.