Rearranging the letters of 'Cherie Blair's star-sign' gives:
Is Libran cash-register!
(by Tony Crafter using Anagram Genius) (2006) (pending approval)
Other related anagrams without their own page:
"Anthony and Cherie Blair" -> "Labyrinthine charade, no?" (by David Bourke using Anagram Genius) (2007)
"Cherie Blair, the Prime Minister's good lady wife" -> "I married hopeless deaf Tory imbecile with grin." (by David Bourke using Anagram Genius) (2004)
"The Prime Minister's wife, Cherie Blair" -> "Benefits? Premier is rich. I'm wealthier!" (by William Tunstall-Pedoe using Anagram Genius) (2002)
"The Prime Minister's wife, Cherie Blair" -> "She is a nimbler, wittier premier chief." (by William Tunstall-Pedoe using Anagram Genius) (2002)
"The Prime Minister's wife, Cherie Blair" -> "I brief premier: 'Thatcherism, wise line'." (by Mick Tully using Anagram Genius) (2006) (pending approval)