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she is in a party is the most popular phrase on the web.

she is at a party 1998,000 results on the web	she is in a party 11,780,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Thirdly, a party exporting prohibited or strictly regulated chemical products must provide information to the importing party. And I intend to be a party guest who actually goes inside the party. Patterson's having a party this weekend. A Party shall notify the other Party if it changes its representative body. A party involves shirtless men and margaritas. This is not a party political issue. Michaela invites me to a party. Agnes insisted that we should allow a party.	Patterson's having a party this weekend. This is not a party political issue. Michaela invites me to a party. And I intend to be a party guest who actually goes inside the party. A Party shall notify the other Party if it changes its representative body. A party involves shirtless men and margaritas. Thirdly, a party exporting prohibited or strictly regulated chemical products must provide information to the importing party. Agnes insisted that we should allow a party.

she is at a party

1998,000 results on the web

she is in a party

11,780,000 results on the web

More popular!

Thirdly, a party exporting prohibited or strictly regulated chemical products must provide information to the importing party.
And I intend to be a party guest who actually goes inside the party.
Patterson's having a party this weekend.
A Party shall notify the other Party if it changes its representative body.
A party involves shirtless men and margaritas.
This is not a party political issue.
Michaela invites me to a party.
Agnes insisted that we should allow a party.

Patterson's having a party this weekend.
This is not a party political issue.
Michaela invites me to a party.
And I intend to be a party guest who actually goes inside the party.
A Party shall notify the other Party if it changes its representative body.
A party involves shirtless men and margaritas.
Thirdly, a party exporting prohibited or strictly regulated chemical products must provide information to the importing party.
Agnes insisted that we should allow a party.