SWITCHED AT BIRTH's Lea Thompson, THE FOSTERS' Sherri Saum to Live Tweet, 1/20

"Switched at Birth" star Lea Thompson (Kathryn Kennish) and "The Fosters" star Sherri Saum (Lena Adams Foster) will participate in live chats via Twitter during the East Coast broadcasts of their ABC Family series on Monday, January 20.

Lea Thompson, who directed the night's episode, will chat live during the East Coast feed of "Switched at Birth," airing on Monday, January 20, 8:00PM - 9:00PM ET/5:00PM - 6:00PM PT. Fans should tweet to Thompson at @LeaKThompson to ask their questions and should include the hashtag #SwitchedAtBirthChat in their tweets. In the episode, Bay is challenged by the demands of her new art teacher and pushed around on the field hockey yard. When her art teacher (guest star Sandra Bernhard, "Roseanne") proves to not be easily impressed, Bay is pushed to re-examine her talents. And adding to her discomfort is her forced commitment to the new Carlton field hockey team. Daphne makes a mistake at the clinic, and Campbell (guest star RJ Mitte, "Breaking Bad") helps her correct it. Kathryn introduces her new friend Renzo (guest star Alec Mapa, "Ugly Betty") to John. Meanwhile, Emmett thinks he may have discovered who has been vandalizing cars at Carlton.

Sherri Saum of "The Fosters" will chat live with fans via Twitter during the East Coast feed of the series airing on Monday, January 20, 9:00PM - 10:00PM ET/6:00PM - 7:00PM PT. Fans are invited to ask Sherri their questions by tweeting to her Twitter handle @SherriSaum1. They should include the hashtag #TheFostersChat in their tweets. In the episode titled "House and Home," Callie meets Rita Henricks (guest star Rosie O'Donnell), a woman who works in the foster care system, and it's clear it will take Callie some time to adjust to Rita's no-nonsense guidance. Brandon comes clean about the reason Callie ran away and, unbeknownst to Stef and Lena, he sets out to track her down. Meanwhile, Mariana volunteers to help with the school play in order to impress a cute boy (guest star Garrett Clayton), but when she gets paired up with an old "friend," it could spell trouble. Jesus' meds are having concerning side effects, and he's desperate to find an alternative to taking the pills. Mike suggests he participate in contact sports to help relieve his aggression, and Jesus tries out for the wrestling team.