Natalie Portman will fill in for Alan at Hooper's Store on 'Sesame Street' May 14 on PBS. Check your local listings. The very cute segment is at the top of the show and lasts about 20 minutes. Natalie gets a job as a singing waitress (sings two songs) and helps Big Bird and Baby Bear deal with new things and change. Natalie was reportedly going to appear in three segments at Hooper's Store but had to drop out due to her bad case of laryngitis.