When it comes to female artists, it can be tough to know where to start.Here are our top 10 women singers of the last decade, as ranked by MTV News.1.Lizzy Grant – Lady Gaga 2.Ariana Grande – Ariana 3.Beyonce – Beyonce 4.Lady Gaga – Beyoncé 5.Kaskade – Lady Chaka 6.Aria – Arianna 7.Lana Del Rey …