Rhianna-Lady gaga are they all tht different ???

Lady gaga-strange:yes
                  famous-yes
                  singer:yes,BUT is she realy famous for singing ????or is she famous for wearing frogs and being
                  well weird??
Rhianna-famous:yes
             singer:yes
             strange:??i'm not sure most would say no but in one of her new videos (rockstar)she wears string and nothing else in others. does that sound a little weird to you???

So similarities : they are both singers,famous and are both a little strange you have to admit.
so i am asking you this question :
do you think Rhianna and lady gaga are all that different???