Best Day Ever is the fifth mixtape by American rapper Mac Miller. It was originally released by Rostrum Records on March 11, 2011, as the follow-up to Miller's acclaimed mixtape K.I.D.S. (2010).
The mixtape consists of sixteen songs produced by nine producers (predominantly ID Labs) and includes features from rappers Wiz Khalifa and Phonte.
The single, Donald Trump, became his first US singles chart entry, peaking at #75 and going platinum.