Rehearsal dinners are traditionally hosted by the groom's family, but in many cases, someone else takes on this responsibility. In any event, the rehearsal dinner invitation should be issued by whomever is hosting the dinner, and the formality of the wording typically reflects the general formality of the wedding as a whole.  

We request

the pleasure of your company

at the Rehearsal Dinner in honor of

Britney Cooper

and

Evan Langdon

on Friday, the fourteenth of June

at eight o'clock in the evening

The Pfister Hotel

424 East Wisconsin Avenue

Milwaukee, Wisconsin

Mr. and Mrs. Robert Langdon

To honor

the bride and groom-to-be

Mr. and Mrs. Michael Cooper

and

Mr. and Mrs. Robert Langdon

request the pleasure of your company

at a Rehearsal Dinner

on the eve of the marriage of

Britney Lynn and Evan Thomas

at eight o'clock in the evening

The Pfister Hotel

424 East Wisconsin Avenue

Milwaukee, Wisconsin