Country music star Ingrid Andress is owning up to her now-infamous national anthem at Monday night's Home Run Derby ... admitting she was hammered during the performance.
Andress faced the music hours after her rendition was widely panned on social media ... going to Instagram to explain why things went so awry.
BARELY HOLDING IT TOGETHER Courtesy of MLB / ESPN
"I'm not gonna bulls*** y'all, I was drunk last night," Andress said in a statement.