Jennifer Aniston was on Jay Leno’s show this week. Aniston wanted to promote her new movie, “He’s Just Not That Into You.” Aniston wore a classic short dress and accessorized with some blings. She showed what sexy pins she had even as she approaches the big 40 this weekend. Aniston will be throwing a birthday party to pamper her friends. She said she freaked out when she discovered a grey hair on her head. Being forty does not look bad on Jennifer Aniston!