My bad. I was wrong, and I'm sorry.
I know this now because they just had their classy engagement party in Nashville on Saturday (Jan. 17). And obviously, the engagement party comes before the wedding. (Although according to Us Weekly, there was a six-tiered white cake at this party. But whatever. They're supposedly getting married "later this year.")
The celebration was held at the Citizen, a place that prides itself on being discreet and private. There was champagne and a photo booth and dancing -- everything you need to properly celebrate anything worth celebrating.
And guests. Only about 100, though.