Is Lady Gaga appropriate for kids?

It is hard to ignore the Lady Gaga’s phenomenon. Today, I have decided listen her music. It is an ok singer, catchy lyrics set to rhythmic beat are contagious, sometimes sounds like Madona and have broad appeal. My 5 year old daughter and I were listening to her music all afternoon; it is amazing the talent she has to memorize the lyrics of the song. Then I watched the video of the song “Bad Romance” on youtube, creative clothes, futurist scenarios but she danced like some stripper and there are bad words in her songs. Now I am not sure if all this is appropriate for children. Should I be worried about this?