Tamera & Tia Mowry*Former “Sister, Sister” stars Tia and Tamera Mowry are among the celebrities profiled in an upcoming episode of OWN’s “Oprah: Where Are They Now?

The show, which catches up with past guests of “The Oprah Winfrey Show,” highlights where celebrities and newsmakers are at now as well as the ups and downs of following up early success and sustaining big show business careers once the phone stops ringing.

In their segment,  Tia and Tamera reveal “the shocking racism they have faced on the Internet.” In addition to the Mowrys, the new episode of “Oprah: Where Are They Now?” will feature the original “Karate Kid” Ralph Macchio, Tom Hanks’ “Bosom Buddy” co-star Peter Scolari and ‘80s hitmaker Kenny Loggins.

“Oprah: Where Are They Now?” air at 8 p.m. ET/PT tonight on OWN: Oprah Winfrey Network.

For a preview of the episode featuring Tia and Tamera Mowry, check out the video below: