Conversation so far:
Is Forever the name of one of Spice Girls' albums?
Forever is the third studio album by English girl group the Spice Girls.
Was Spice Girls' Forever a popular album?
Despite failing to match the commercial success two previous albums, Forever peaked at number two on the UK Albums Chart and was certified Platinum by the British Phonographic Industry.
Was the commercial failure of the album Forever the reason the Spice Girls took a hiatus?
In January 2001 the Spice Girls unofficially announced that they were beginning an indefinite hiatus and would be concentrating on their solo careers.
How long was the Spice Girls' hiatus?
On 28 June 2007, the Spice Girls held a press conference at The O2 Arena revealing their intention to reunite.
Were the Spice Girls involved with anything else during their release of Forever and the hiatus?
In December 1999 the Spice Girls performed live for a UK-only tour, Christmas in Spiceworld, in London and Manchester, also showcasing new songs from the third album.
Did the Spice Girls win any awards during their release of Forever and the hiatus?
The Spice Girls performed at the 2000 Brit Awards, where they received a Lifetime Achievement Award.
Did Spice Girls' Forever album do well in the United States?
In the United States, Spice Girls' Forever achieved moderate success; it peaked at number 39 on the Billboard 200, lower than their previous album Spiceworld.

Question: Did they collaborate with anyone special ?
Self-contained rewrite: Did Spice Girls collaborate with anyone special for their album Forever?