She was wonderful as a 1960s teen in NBC’s canceled-too-soon “American Dreams” (2002-05), and now it appears that Brittany Snow will get to play another American teenager coming of age in another turbulent era — young Lily van der Woodsen in the “Gossip Girl” spinoff set in 1980s Southern California. Several websites are reporting that the CW is set to sign the 22-year-old Floridian for the May 11 pilot episode. We agree Snow is a solid choice, and hopefully the new part will erase her last teenage role — the neo-Nazi student in “Nip/Tuck.”