Friends and famous fans of Madonna have sent messages of support to the star after she was hospitalised on Saturday.
Rosanna Arquette, who co-starred with Madonna in 1985 film Desperately Seeking Susan, sent "love and good light vibrations" for recovery.
Singer The Weeknd showed his support, along with Game of Thrones star Gwendoline Christie.
Madonna's manager said on Wednesday she had been in intensive care due to a "serious bacterial infection".
The 64-year-old singer was due to embark on a seven-month world tour but has now had to postpone it.
Celebrating 40 years in the industry, the tour was due to include a number of her greatest hits.
Madonna is believed to still be receiving treatment in a New York hospital but is no longer in intensive care.
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