Whitney Houston struggled her way through a sold-out Birmingham concert in the UK. The 46-year-old is currently on her Nothing But Love world tour, but some fans felt the diva's performance last night was nothing but crap.

One fan tells the UK's Daily Mail: "I was waiting for the Trading Standards guys to call a halt and offer us our money back. It was a con, a rip off. It wasn't a concert." Ouch!

Three UK concerts had been rescheduled due to Whitney's throat infection, so fans were anxious to see her return to the stage. At one point last night, reports claim the pop diva took 15 minutes for a mid-concert costume change. When she returned to the stage, she jokingly said to the audience: "I could hear you getting pissed off."

Check out Miss Whitney reaching for those high notes while singing her mega-hit, I Will Always Love You. You be the judge.