"She Let Herself Go" is a song written by Dean Dillon and Kerry Kurt Phillips, and recorded by American country music singer George Strait.

It was released in September 2005 as the second single from Strait's album Somewhere Down in Texas.

Billboard Hot Country Songs charts, tying the record held at the time by Conway Twitty.

Stephen Thomas Erlewine reviewed the song favorably, calling it a "clever breakup tale".

Billboard Hot Country Songs for the week of September 17, 2005.