Madonna through the years.

http://www.youtube.com/watch?v=5N6KqgMj8o8
http://www.youtube.com/watch?v=XS088Opj9o0
http://www.youtube.com/watch?v=bH

Throughout the years Madonna has managed to recreate her image to regain popularity and keep her audience and gain new audiences. Her image changes drastically throughout her videos.
The first video "papa don't preach" was one of the first of Madonna's songs and she was not yet big in the industry. The video had a storyline and key characters within it. She herself played the role of the "bad girl" who has fallen in love and become pregnant. For the video she hired a well known actor to further her popularity and interest in the video. She is wearing fashionable clothes for that era, including a lot of black to keep with the bad girl image. During cutoff's she would dance - this part of her image she has kept to this day.
The second video above "frozen" was out when she was more popular with the public. It slightly contrasts with the first video due to the fact that she looked far more mature. She also looked to be far more feminine, but kept the black clothing as this still shows that she hasn't completely changes her image at this stage. Throughout the video she did do some dancing, however it looked to be more spiritual than punky.
The last video '4 minutes' displays Madonna as being a young, physically able, attractive women wearing next to nothing. Although in fact Madonna is a 53 year old woman, dancing next to a 20 year old man, Justin Timberlake. She demonstrates her physically able physique by displaying her muscles, and dancing in unison with Justin Timberlake. She has done this purposefully to display to the world that she still believes that she is capable of performing as she did in her earlier videos. She still even in this video many years from the first of her work, performs wearing black, to maintain one of her earlier traits, though displays an alarming amount of flesh in the process.