02/04/2008 AT 01:50 PM EST
briefly left rehab – to go to the American Embassy in London.
Accompanying her on the short visit, reports the BBC
, were her father Mitch Winehouse and a nurse. Amy also looked healthier than she has in some time, said the news service.
Decked out in a white skirt and polka dot top – and her trademark beehive – the 24-year-old singer, who wishes to attend
the Feb. 10 Grammy in Los Angeles, sought a visa to make her trip possible. Still, the process may not be all that easy.
"The appointment at the U.S. Embassy was made some time ago and was part of process for obtaining a visa," said Winehouse's rep, adding that "no decision" has been made about her California trip.
He added: "Amy was accompanied by a nurse as the appointment was under supervision. She has not left rehab and remains under the care of the clinic."
On Jan. 24, Winehouse was admitted
to the Capio Nightingale clinic in north London, says the BBC. Only days before, a video surfaced that purportedly showed her smoking crack cocaine
, which is what will likely impede her visa application.
In addition, in October she was arrested and fined in Norway for possession of cannabis, a claim she intends to appeal this month in a Norwegian court.
She is nominated for six Grammys
, including album of the year (Back to Black
), song of the year and record of the year ("Rehab"), and best new artist.