Do you mean by themselves or with added stimulus? For example, let's say your partner is wearing a pair of vibrating panties with the stimulation focused on her clit versus her anus. It's been my experience that it can but not just by themselves. Usually the motors in those is really small and not powerful enough to do much more than make the wearer have an awkward but happy grin on their face for a little while. See my experience below.

Again, with my experience with just the vibrating panties, it wasn't enough to get her soaking wet but it did get things started in that direction. There was added stimulus i.e. kissing and touching (hand holding and a little tasteful groping). I'd "accidentally" graze her bottom every now and again or throw in a pat on her bottom when no one was looking.

It really all just depends though. My experiences might not translate directly to you. For all I know, just wearing them with them not turned on might really excited your partner and when you activate them she might demand with firm and unwavering conviction you to escort her over to the nearest bathroom, closet, dressing room, abandon lot, empty barn, rooftop, car... (you get the idea) and demand that you handle business.

The exchange of power can be very exciting...