Pop stars have sent messages of support for Amy Winehouse as she stays at a rehab clinic.

The singer is at a centre in Essex with reported drug and drink problems.

Lily Allen, who has previously exchanged insults with Winehouse in the press, has sent her a bouquet of flowers and a get well soon card, according to the Sunday Mirror.

Richard Archer, Hard-Fi frontman, also sent his best wishes and said the singer's problems were probably down to music bosses overworking her.

He commented: "I sympathise with Amy because she is genuinely sick. Record companies just bust your balls."

Kanye West paid tribute during his set at the V Festival. Before playing a version of her track 'Rehab' he told the crowd: "I know you wanna hear this, so I'm gonna play this for you."

Winehouse was replaced by Happy Mondays at the event after she pulled out.