The original song Tab'ak Ghair (You are Different) was released over ten years ago but the similarities with Nancy's Ya Banat Ya Banat (Oh Girls Oh Girls) are striking.
Neither singer has publically spoken out about the issue but fans have blamed the composers of Nancy's song - Waleed Saed and Nabil Khalaf - for the problem.
Nancy had released a sample from her new children’s album soon to come out, entitled Ya Banat (Oh Girls) , her second album designed for a younger audience.
Who do you think is to blame for the mix-up? Tell us below.