<P> Kelly played Laurie Forman , the older sister of Eric Forman , on That ' 70s Show . She abruptly left the show midway through the third season , and her character was written out of the show to `` attend beauty school '' . She returned to the show in the fifth season for four episodes but was replaced with Christina Moore in the sixth season . In an interview with ABC News , she admitted that `` with That ' 70s Show I was guilty of a drinking problem , and I ran '' , blaming her alcoholism on the loss of a baby . </P>
<P> Kelly played Laurie Forman , the older sister of Eric Forman , on That ' 70s Show . She abruptly left the show midway through the third season , and her character was written out of the show to `` attend beauty school '' . She returned to the show in the fifth season for four episodes but was replaced with Christina Moore in the sixth season . In an interview with ABC News , she admitted that `` with That ' 70s Show I was guilty of a drinking problem , and I ran '' , blaming her alcoholism on the loss of a baby . </P>
when did lori change on that 70s show
when did lori change on that 70s show
the sixth season
the sixth season