Who'd have thought that Christina Aguilera and Britney Spears were once best friends on The Mickey Mouse Club?
Having exchanged a length of insults over the past few years, and Christina nabbing Britney's job as the face of Skechers, the final straw came after Britney left Christina off her wedding guest list.
But the two have done a lot of growing up since then. They've even sent gifts to each other's kids. Nice.
Find all the latest about your favourite star
Social bookmarking allows you to save and categorise a personal collection of bookmarks and share them with others. This is different to using your own browser bookmarks which are available within your web browser.
Use the links on the left to share this page on the social bookmarking site of your choice.
Read more about social bookmarking at: Wikipedia - Social Bookmarking