The pictures and a video on Instagram of her working out in new long, black tresses has left us all a little bemused.
We don't object to the wig, we object to what the wig represents - being hot, itchy and dolled up in the gym.
Twittertoo had a resounding 'eh?' confusion over the issue.
This squats expert had this to say:
Jessie j just annoys me. Just saw her insta, why is she wearing a wig to the gym? She wasn't even do squats right ffs— Melissa (@_mel1ssa) January 13, 2014
Meanwhile others were embracing the wig workout:
Only Jessie J can wear a wig to the gym and it be acceptable— Daniella (@imdaniellebtw) January 13, 2014
Any ideas what is going on here? Anyone? Tweet us @handbagcom
We've never written the word 'wig' so many times so are off for a nap. In the meantime, take a look at this:
SOME CELEBRITY HEALTHIES THAT MAKE MORE SENSE...
MEET JESSIE J, YOUR NEW PERSONAL TRAINER
IS THIS THE BEST BUM ON INSTAGRAM?
MORE DIET AND FITNESS NEWS