The host's name shapes every other line
Bridal shower wording starts from a simple question the guest is quietly asking: who is running this, and is it addressed to me? A shower hosted by a friend reads differently from one hosted by the couple, and differently again from a family-hosted afternoon. Name the host plainly at the top and the rest of the invitation falls into a consistent tone.
Once the host is settled, the wording has one job on each line: remove a question. Say what kind of gathering it is, when and where it happens, and exactly how to reply. Keep it warm but specific, because a guest who has to text you for the address or the start time has an invitation that did not finish its work.