go-to girl(redirected from his go-to girl)
A female who is known to be helpful or reliable for a certain task or goal. Sarah is my go-to girl for event planning, so she will definitely be able to help you find a caterer. With this promotion, you're going to be our go-to girl for all sales in the Pacific Northwest.
See also: girl
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.