Yearbook Library; Globe
Can you guess who these birthday girls are by looking at their pre-fame shots? Uma Thurman (top) is celebrating her 42nd birthday today, while Michelle Pfeiffer turns 54. Congratulations, ladies! Click through our gallery to see Michelle's Hollywood transformation, from flaxen-haired teen to big screen siren.
MORE:• See Uma Thurman's Transformation, Too!• Uma's Big Marilyn Monroe Reveal on Smash• Michelle Pfeiffer: Then and Now
