Between 1989 to 1992, the leading lady of Baywatch was Erika Eleniak who played Shauni McClain
From 1992 to 1994, Nicole Eggart played Roberta "Summer" Quinn on Baywatch.
Between 1992 to 1997, the leading lady of Baywatch was Pamela Anderson as C. J. Parker. Pamela Anderson was also the leading lady for the first ever Baywatch film, a made for television film entitled Baywatch: Hawaiian Wedding broadcast on February 28, 2003.
Alexandra Paul played Stephanie Holden on Baywatch from 1992 to 1997.
In 1994, eleven year old Mila Kunis appeared in the Baywatch episode Aftershock as an eleven year old girl named Annie who saves two classmates from drowning by calling lifeguard Stephanie Holden played by Alexandra Paul. Eleven year old Mila Kunis is considered to be a heroine for calling a grownup to save classmates who entered the ocean without adult supervision.
From 1997 to 1999, the leading lady of Baywatch was Kelly Packard as April Giminski
From 1999 to 2001, Baywatch was renamed Baywatch Hawaii with Brooke Burns as Jessie Owens as the leading lady. Attempting to save Baywatch by redoing the television series didn't work though.
Baywatch is coming back as a theatrical motion picture on May 19, 2017 and it will be the second film adaptation and the first theatrical motion picture adaptation, but this time with Dwayne "The Rock" Johnson as the second incarnation of Mitch Buchannon and Alexandra Daddario as Summer Quinn as the leading lady.
Kelly Rohrbach as C. J. Parker in the 2017 Baywatch reboot film