Spice Girl Emma Bunton is celebrating her first solo number one single today after knocking Hear'Say off the top of the charts. Bunton said she was delighted with the success of her single 'What Took You So Long', which has ended three weeks at the top for the Popstars band. Baby Spice's last single, 'What I Am', only reached number two and was beaten to the top spot by Geri Halliwell's 'Lift Me Up'.