This is a fun event with an old school upscale/dressy western Nashville theme, sponsored by Trim - men's high fashion clothing that is comfortable for an active man.
Trim brand has a clean, modern look (weartrim.com).
The launch event invitation should convey that this will be a blast of a party for an exclusive crowd, and should also echo the upscale western theme.
The Trim brand is for men, but the event will be both women and men on a Friday night drinking and dancing to a DJ playing top 40 dance music (no techno), targeting 25 to 40 age range, at a trendy bar/restaurant in Nashville.
The invitation should balance classy and exclusive with fun and energy.
Perhaps a whisky glass with whisky splashing on a black background, or perhaps a well dressed man and a woman celebrating.
Also the Trim logo should be on there, with space at the bottom for several other smaller logos as we get sponsors.