The Step Up star threw herself a bachelorette party that started in South Beach and continued in Turks and Caicos this week, with help from Haylie Duff and Emmanuelle Chriqui.
Their first stop was the Gansevoort hotel in Miami, where they lounged by the pool with their group of girls, including Channing's sister.
On Friday, they hopped a flight to the Gansevoort in Turks and Caicos, where they logged more pool time at the Bagatelle Beach Club.
So were there any single-girl shenanigans on the trip?
Not so much...it sounds like Jenna's head over heels for her honey!
"Jenna talked about Channing constantly," says a source. "The girls really kept it low-key and spent a lot of their time lounging by the pool, drinking strawberry daiquiris and piña coladas."
The twosome, who first met on set in 2005, are expected to tie the knot sometime in the next two months.
—Additional reporting by Claudia Rosenbaum