Healthy looking Winehouse off to jailhouse

However, her last week in rehab, forced upon her by her father Mitch after recent images of her openly smoking crack cocaine, seems to have brought a little more colour into her cheeks.

Swapping her usual scowl for a hearty smile for the lenses, Amy was snapped leaving her new rehab home looking healthier and less skeletal than in recent weeks.

But Winehouse may be banned from the Grammys after she was questioned by police in London about crack cocaine.

The singer was interviewed under caution at a clinic in connection with video footage which allegedly showed her smoking the drug.

Winehouse, 24, could be turned away from Los Angeles this weekend by US authorities aware of her past drug use.

Last month footage obtained by the Sun appeared to show Winehouse inhaling fumes from a crack pipe after a 19-minute drugs binge in which she snorted ecstasy and cocaine and admitted to downing six Valium.

The disturbing images were said to have been filmed during a party at Winehouse's east London home, hours before she attended a court hearing for husband Fielder-Civil.

He is awaiting trial on charges of assault and conspiracy to pervert the course of justice.

At the time Winehouse's father Mitch told the Sun: "Your video of Amy taking drugs may well be the best thing that has ever happened to her.

"For all the hurt and pain, it may finally be the thing to focus her mind and convince her to get the help she needs to quit for good."

The Back to Black star is now in rehab, admitting herself to the Capio Nightingale clinic in north London on January 24 days after the video appeared.

On February 4 the singer took a break from her treatment to apply for a US visa so she could attend the Grammys in Los Angeles on February 10, where she is nominated for six awards.

The application process will not be simple due to her drugs record. Last October she was arrested and fined in Norway for possession of cannabis.