<P> Kelly was born and raised in Southington, Connecticut . Her parents were Thomas Carl Kelly and Linda Diane (née Grimm) Kelly . </P> <P> Kelly made her debut in the 1992 Married...with Children episode "Kelly Doesn't Live Here Anymore". She appeared again in 1997 in episodes of Silk Stalkings and on Charmed in 1999, as well as in direct - to - video and television films such as Amityville Dollhouse, Late Last Night, and Jawbreaker . </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> <P> In August 2010, Kelly was arrested in North Carolina on a charge of driving under the influence . In November 2010, she pleaded guilty and was fined and sentenced to 12 months of unsupervised probation . </P>

Why did they change actors for lori in that 70s show