Who played the sun baby in the original run of Teletubbies?

The actress who played the Sun Baby in the original run of Teletubbies was Jessica Smith. She portrayed the iconic baby face that appeared in the sun during the show's opening and closing sequences. Smith was chosen for the role because she had a cute and expressive face that perfectly fitted the character. Her role as the Sun Baby contributed to the memorable and beloved nature of the Teletubbies series.