Complex sentence: The first season was hosted by current American news personality, Lauren Sánchez; since the second season it has been hosted by former British children's television personality and one-time game show emcee, Cat Deeley.
Split into simpler sentences: The first season was hosted by current American news personality, Lauren Sánchez. Since the second season it has been hosted by former British children's television personality and one-time game show emcee, Cat Deeley.