Zac Efron's Underwear Changes From White To Black

Of course, shooting a music video is hard. I remembered watching a 'the making' of Christian Bautista's "The Way You Look at Me" music video, because it took one whole day just to shoot the 4-minute music video. The job gets harder if a certain film or video contains choreography which involves a lot of people.

This music video is obviously taken from the movie "High School Musical 2" at the beginning part. The difference between Christian Bautista's music video and this one is the great dance moves executed. I published this because a lot of people are stunned (I don't know) why Zac Efron's underwear changes from white to black - wearing the same clothes.

Credits: Walt Disney Pictures
00:10-00:11 White Underwear
00:17-00:18 Black Underwear

One possible reason I could think is that the shoot took more than one day. This could be an explanation why all personal things, in this case Zac Efron's underwear, are changed (a day has already passed) while all the studio outfit remains the same. Another possible thing I can think of is that there must be a request of a re-shoot at the beginning of the music video. Maybe at that point of re-shoot, only the outer garments are given back to the actors and actresses.