On today's What to Watch: Barbie hits a huge milestone, crossing the $1 billion mark at the worldwide box office, making Greta Gerwig the first female director to do so. New episodes of Stars on Mars, Claim to Fame, and a new season of Ugliest House in America. Plus, Hollywood trivia, This Week in Entertainment History, and entertainment headlines, including Mattel revealing its making a doll version of Kate McKinnon's Weird Barbie, and the death of Breaking Bad actor Mark Margolis. More at ew.com, ew.com/wtw, and @EW on Twitter and @EntertainmentWeekly everywhere else. Host/Writer/Producer: Gerrad Hall (@gerradhall); Producer/Writer: Ashley Boucher (@ashleybreports); Editor: Samee Junio (@it_your_sam); Writer: Wesley Stenzel; Executive Producer: Chanelle Johnson (@chanelleberlin).

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