That they chose to use attractive, well-dressed women, who looked like they were having fun, is somehow offensive.
I cannot roll my eyes hard enough at this.
I'm taking them at their word.
"The photo in question was taken from a series of photos of event attendees that were posted on our Facebook page in March. These photos were taken at a photo booth featuring top hats, bow-ties, and other fun black-tie related props. It was used with the intent to promote and encourage attendance at the inaugural event here in Chicago."
Re-reading it, it might not have been this exact party/event, but it's clear that it's not just some stock photography of pretty women.