Madonna and Guy Ritchie Heading for Divorce?

According to UK's Holy Moly, Madonna has hired a divorce lawyer, to start divorce proceedings against her husband, Guy Ritchie.
Apparently the couple has just "grown apart" over the years and "The adoption of David Banda attracted a huge wave of negative publicity, allegedly putting further strain on the relationship."
The report claims Madge and Guy didn't have a pre-nup and and he may be entitled to half of her fortune.
The couple have three children: Adopted Malawian David Banda, their natural son Rocco, and Lourdes, Madonna's daughter from a relationship with her fitness instructor Carlos Leon.
UPDATE: Her rep is saying that Madonna never hired a divorce lawyer and the story is "completely untrue".