updated 03/16/2010 AT 2:00 PM ET
•originally published 03/16/2010 AT 3:15 PM ET
Are the demands of her mammoth Monster Ball Tour weighing too heavily on Lady Gaga?
A month after postponing two concerts in the U.S. due to exhaustion, the pop star, 23, appeared on the verge of collapse at a show on Saturday in Auckland, New Zealand – with video showing her sitting and even lying down during the last song, “Bad Romance.”
She did finish the performance, and no problems were reported the following night at the same venue.
Gaga, known for elaborate stage shows, is nearing the midpoint of a lengthy world tour that began in North America in November. She is now on a 15-date excursion through New Zealand and Australia, after which she will visit Japan, Europe and North America again, wrapping up the tour in September – more than 100 shows overall in less than 10 months.
A rep for the singer did not immediately return a request for comment.