The country singer - who will marry ice hockey player Mike Fisher next month - celebrated the end of her single life with a group of her closest female friends and made sure all eyes were on her at the bash with a specially-made sash, while her pals donned feather boas as they took to the dance floor.
A source said: "Around midnight on June 25, Carrie landed at Las Vegas` Lavo nightclub with about eight girlfriends.
"She was wearing a mini-dress and a sash that said `bachelorette`."
However, onlookers insist the party didn-t get too wild, though it was obvious the group were enjoying themselves.
The source added to Life and Style magazine: "It wasn`t a rowdy bacheloretteparty. No shots or singing or anything like that. It was just a group of girls dancing and having fun!"
Meanwhile, Mike threw his own bachelor party, celebrating with friends at Miami nightspot Mansion.
A source said: "The guys downed shots of Belvedere and danced on their table as King of Crunk, rapper Lil Jon DJ-ed. Mike was the most subdued of the group, sitting back and admiring the madness as he nursed one cocktail through much the night."
Carrie recently admitted she is taking a relaxed approach to her wedding.
She said: "We`ll just show up. It`s mainly about family and friends and the two of us. So it`s going to be good no matter what."