Girl You Know It's True is a 1989 album that served as the North American debut of German R&B duo Milli Vanilli.

In January 1990, Girl You Know It's True was certified 6× platinum by the RIAA after spending seven weeks atop the Billboard Top 200.

On 16 November 1990, Los Angeles Times reporter Chuck Philips reported that the group, which consisted of reputed vocalists Rob Pilatus and Fab Morvan, did not sing a single note on the album.

According to producer Frank Farian, the decision to repackage All or Nothing as Girl You Know It's True was made by Arista Records president Clive Davis.

[9] In addition to including five of the tracks that originally appeared on All or Nothing ("I'm Gonna Miss You", "All or Nothing", "Baby Don't Forget My Number", "Dreams to Remember" and "Girl You Know It's True"), Girl You Know It's True featured several new tracks, including "Blame It on the Rain", which would go on to be a worldwide hit single, reaching number one on the Billboard Hot 100.