Well, it’s official. Britney Spears is not the only screw up in the Spears family. Her 16-year-old sister, Jamie Lynn Spears, has announced to OK! magazine that she’s pregnant, confirming she’s 12 weeks along and that the father is her boyfriend, Casey Aldridge, 19. The two began dating when Jamie Lynn was 13 years old, but had recently broken up. Jamie Lynn has just finished her third season (and probably final, after this announcement) as innocent schoolgirl Zoey Brooks on the Nickelodeon series Zoey 101, shown in Canada on Family Channel. The teen says she plans to keep the baby.