Question: In the 18th AVN Awards ceremony, what adult film star and  American entrepreneur, webcam model and former pornographic film actress, who has been called the world's most famous adult entertainment performer and "The Queen of Porn", hosted the show for the second time?
Context: The 18th AVN Awards ceremony, presented by Adult Video News (AVN), took place January 8, 2001 at the Venetian Hotel Grand Ballroom, at Paradise, Nevada, U.S.A.  During the ceremony, AVN presented AVN Awards in 77 categories honoring the best pornographic films released between Oct. 1, 1999 and Sept. 30, 2000.  The ceremony was produced by Gary Miller and directed by Mark Stone.  Adult film star Jenna Jameson hosted the show for the second time. The 22nd AVN Awards ceremony, presented by Adult Video News (AVN), took place January 8, 2005 at the Venetian Hotel Grand Ballroom, at Paradise, Nevada, U.S.A.  During the ceremony, AVN presented AVN Awards (commonly referred to as Oscars of porn) in nearly 100 categories honoring the best pornographic films released between Oct. 1, 2003 to Sept. 30, 2004.  The ceremony, televised in the United States by Playboy TV, was produced and directed by Gary Miller.  Comedian Thea Vidale hosted the show for the first time with adult film star Savanna Samson. The 19th AVN Awards ceremony, presented by Adult Video News (AVN), took place January 11, 2002 at the Venetian Hotel Grand Ballroom, at Paradise, Nevada, U.S.A.  During the ceremony, AVN presented AVN Awards in more than 80 categories honoring the best pornographic films released between Oct. 1, 2000 and Sept. 30, 2001.  The ceremony was produced by Gary Miller and directed by Mark Stone.  Comedian Bobby Slayton hosted the show for the third time; his co-host was adult film star Teri Weigel. The 17th AVN Awards ceremony, presented by Adult Video News (AVN), took place January 8, 2000 at the Venetian Hotel Grand Ballroom, at Paradise, Nevada, U.S.A.  During the ceremony, AVN presented AVN Awards (often dubbed the "Academy Awards Of Porn") in 77 categories honoring the best pornographic films released between Oct. 1, 1998 and Sept. 30, 1999.  The ceremony was produced by Gary Miller and directed by Mark Stone.  Adult film star Juli Ashton hosted the show. The 20th AVN Awards ceremony, presented by Adult Video News (AVN), took place January 11, 2003 at the Venetian Hotel Grand Ballroom, at Paradise, Nevada, U.S.A.  During the ceremony, AVN presented AVN Awards in nearly 90 categories honoring the best pornographic films released between Oct. 1, 2001 and Sept. 30, 2002.  The ceremony was produced by Gary Miller and directed by Mark Stone.  Comedian Doug Stanhope co-hosted the show for the first time with adult film star Chloe. Jenna Jameson (born Jenna Marie Massoli; April 9, 1974) is an American entrepreneur, webcam model and former pornographic film actress, who has been called the world's most famous adult entertainment performer and "The Queen of Porn". The 15th AVN Awards ceremony, organized by Adult Video News (AVN), took place January 10, 1998 at Caesars Palace, in Paradise, Nevada, U.S.A.  During the show, AVN presented AVN Awards (the industry's equivalent of the Academy Awards) in 54 categories honoring the best pornographic films released released between Oct. 1, 1996 and Sept. 30, 1997.  The ceremony was produced by Gary Miller and directed by Mark Stone.  Comedian Robert Schimmel hosted, with adult film actresses Racquel Darrian and Misty Rain as co-hosts.  At a pre-awards cocktail reception held the previous evening, 50 more AVN Awards, mostly for behind-the-scenes achievements, were given out by hosts Nici Sterling and Dave Tyree, however, this event was neither televised nor distributed on VHS tapes as was the main evening's ceremony.  Both events included awards categories for gay movies; the final year the show included both gay and heterosexual awards.  The gay awards were subsequently spun off into a separate show, the GayVN Awards. The 24th AVN Awards ceremony, presented by Adult Video News (AVN), honored the best pornographic films of 2006 and took place January 13, 2007 at the Mandalay Bay Events Center in Paradise, Nevada.  During the ceremony, Adult Video News presented AVN Awards (commonly referred to as the Oscars of porn)) in 119 categories released during the eligibility period, Oct. 1, 2005 to Sept. 30, 2006.  The ceremony, televised in the United States by Playboy TV, was produced and directed by Gary Miller.  Adult film star Jessica Drake hosted for the first time, with comedian Jim Norton, who also co-hosted in 2004. The 30th AVN Awards ceremony, or XXX AVN Awards, was an event during which "Adult Video News" ("AVN") presented its annual AVN Awards to honor the best pornographic movies and adult entertainment products of 2012.  Movies or products released between October 1, 2011 and September 30, 2012 were eligible.  The ceremony was held on January 19, 2013 at The Joint in the Hard Rock Hotel and Casino, Paradise, Nevada.  Comedian April Macie, AVN Hall of Fame inductee Jesse Jane and Asa Akira, who won Female Performer of the Year, hosted the AVN Awards.  The awards show was held immediately after the Adult Entertainment Expo at the same venue. The 34th AVN Awards, presented by Adult Video News (AVN), honored the best pornographic movies and adult entertainment products of between October 1, 2015 and September 30, 2016 and took place on January 21, 2017 at The Joint in Hard Rock Hotel and Casino, Paradise, Nevada.  During the ceremony, Adult Video News presented AVN Awards (often referred to as the Oscars of porn ) in 117 categories.  Webcam star Aspen Rae and reigning AVN Female Performer of the Year Riley Reid co-hosted the ceremony, each for the first time.  Master of ceremonies was comedian Colin Kane.
Answer: Jenna Jameson