Australian singer Kylie Minogue has hailed her guest of honour appearance at SIR Elton John's annual White Tie And Tiara Ball as her official return to showbusiness after recovering from cancer. The SPINNING AROUND singer, who was forced to cancel the Australian leg of her world tour last May (05) when she was diagnosed with breast cancer, was joined by Simon Cowell, Rod Stewart, Elle Macpherson and Ozzy Osbourne at John and partner David Furnish's mansion in Windsor, England, last night (29JUN06). She said, "This is my official coming out."