Susan Boyle is rumoured to be under pressure again as she has not yet confirmed her appearance on the Britain's Got Talent tour, just hours before the first show which will take place in Birmingham tonight. Susan has felt the strain of celebrity ever since she wowed the crowds with her rendering of "I dreamed a dream" on the show in April. Though her performance was viewed by millions worldwide on youtube, she lost in the final to streedance group Diversity. It was then cracks started to appear on the seemly jovial façade...The singer allegedly broke down at her hotel, claiming she hated the show and threw a glass of water at a member of staff. She was admitted shortly after to the Priory, a favourite with celebs suffering from substance abuse or mental issues. Though she was suffering from stress, she was out within five days. Now rumours are saying that she hasn't turned up for rehearsals for the tour, and one might ask the question, was it too soon for her to leave the clinic?Within just a couple of months she went from being an unknown Scottish spinster to a worldwide celebrity, appearing on Larry King's show and in a Simpsons' episode!The pressure of winning, getting a makeover and appearing in the media every day must surely have taken its toll...Let's just hope Susan will get better and remains the simple woman from Scottland everyone has learned to know and love, and with Simon Cowell backing up her career, she will no doubt have a fabulous album in store for us!