Lela Rose threw a “tequila tasting” party last night.

Lela Rose, Mercedes-Benz Fashion Week Fall 2012

The designer has a range of glamorous gowns available on website Rent The Runway, which allows fashion fans to lease key pieces for special occasions. After they have been worn, the items are simply returned in the post.

Socialite Tinsley Mortimer has been named a trendsetter for the site and so a party was thrown in her honor.

“Designer Lela Rose turned a New Orleans-themed dinner for author and socialite Tinsley Mortimer into a tequila tasting Wednesday night at her TriBeCa home,” reports New York Post.

Guests included designer Rachel Roy, model-and-designer Lauren Bush and fashion editor Annabel Tollman.

After working their way through dinner, the group retired to the downstairs of the home where they began sipping Moscow Mule cocktails and tequila shots. Entertainment came in the form of karaoke, which most of the guests joined in with.

As part of her position, Tinsley has selected a number of pieces she thinks every girl will fall in love with for the site.