lend your name to
idiomPart oflend
lend your name to — idiom
1. To let it be known publicly that you support a particular cause, event, or organ
1.idiom
Definition
To let it be known publicly that you support a particular cause, event, or organization, often allowing your name to be used for publicity.
Example
The famous scientist lent her name to the climate change awareness campaign.
Several well-known actors lent their names to the charity fundraiser last year.