WWW.ACEPIXS.COM . . . . . ..... . . . . US SALES ONLY . . . . .....January 4 2012, LA....Demi Lovato signs copies of her 'Seventeen' magazine cover issue at Barnes & Noble Booksellers on January 4 2012 in Glendale, California....Please byline: FAMOUS-ACE PICTURES... . . . . ....Ace Pictures, Inc: ..Tel: (212) 243-8787..e-mail: info@acepixs.com..web: http://www.acepixs.com