Lindsay Lohan is showing off her new image in this week’s issue of “Vanity Fair.”  In the interview, the 24-year-old actress opens up about the antics that landed her in a Los Angeles jail last month, but insists her bad girl days are over.  Lohan tells the magazine she partied just like a lot of people do during their college years.  However, she admits her partying was “irresponsible.”  Lohan blames peer pressure and a lack of “structure” for many of her mistakes, but denies ever abusing prescription drugs.  She also lays into her father, Michael, for failing to be there for her family.  The interview, which is accompanied by a sexy photo spread, was conducted a week before the “Mean Girls” star reported for her 13-day jail sentence for violating her DUI probation.  Lohan says she’s committed to getting her career back on track, even if it means no more partying.  She says, quote, “I want the respect that I had when I was doing great movies.  And if that takes not going out to a club at night, then so be it.”  She also insists she’s quote, “a completely different person now.”