S2, E3: Lauren's cool younger sister, Heather (guest star JOANNA CANTON - "Related," "That '70s Show"), visits for a job interview and Lauren launches a campaign to convince Heather to move to Los Angeles. Lauren would love to have her sister nearby when the baby is born, but will Lauren's aggressive attempts to sell Heather on living in LA end up working against her? Meanwhile, with Lauren consumed with her sister's visit and Eric away on business, Julie convinces Cooper to keep her company. But when new mom Julie falls asleep from exhaustion, Cooper is confronted with one of her greatest fears -- a crying baby Perry.