Young Hollywood is at PaleyFest to get the scoop on Lifetime's much-anticipated new original series, 'You', straight from the cast and creators themselves! We catch up with stars Penn Badgley, John Stamos, Elizabeth Lail, and co-creator Sera Gamble, who reveal whether or not they've ever indulged in a little social media stalking in real-life and share their thoughts on whether certain situations are creepy or socially acceptable!