We were unaware that our artist would be changing her hairstyle several times, this problem was challenging yet rewarding as we figured it was not a bad idea for our actress to change her hairstyle after all as in most music videos the singer is usually changing their hairstyles.
For example:

These are all print screens from Rihanna's music video 'unfaithful' although it does not look like it is from the same video. This is because Rihanna has different hairstyles, this is effective because it can portray that she has been with her lover for a long period of time and it can also portray how glamorous she is, therefore we felt that our actress changing her hairstyle a lot was beneficial as it helps portray Rihanna better than we thought it would.
Furthermore, another problem that encountered was that there was not much lip synching of our actress which was a downfall as that does not help keep our music video conventional.
Examples of lip syncing within Rihanna's music videos:
We resolved this problem by making our video mostly narrative.