Simpson was admitted to Cedars-Sinai Medical Center on Friday for a "minor kidney infection" and was released Monday, Simpson's representative Lauren Auslander told The Associated Press. In Touch magazine reported Simpson's hospitalization Monday.
Auslander said the 27-year-old singer-actress is feeling "much better now."
According to the In Touch report, Dallas Cowboys quarterback Tony Romo, Simpson's current squeeze, wanted to be by Simpson's side but had prior commitments in Dallas.
Simpson is currently working on a country music album.
