hmm,i think fans should answer,but they are both great,but i believe Lady Gaga has been more successful,they are both great,i wont compare them but gaga is more successful
Lady Gaga
Lady Gaga.
lady gaga
lady gaga
Lady Gaga.
LADY GAGA, any day!
Lady gaga
Lady Gaga is shorter than Beyonce but Lady Gaga's voice is much better.
No, Lady Gaga is a LOT better than Marianas Trench
Lady Gaga. In many, many ways.
Lady Gaga tops. :PLady Gaga is more famousLady Gaga is more famous
Lady Gaga!! More modern and better known.