be a slave to/of something
be a slave of (something)
To be unduly influenced by or care too much about something; to spend too much or time or energy on something. Jeremy is a total slave of fashion. He can't leave the house without making sure every part of his outfit is perfect.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
be a slave to/of somethingbe a person whose life is completely controlled by something, for example a habit, a job, an interest, etc: She’s a slave to fashion; she’s always buying new clothes.
Farlex Partner Idioms Dictionary © Farlex 2017