I think this would be an interesting discussion both had INCREDIBLE success with their debuts.
Let Go was released in 2002 was credited as one of the best pop debuts of the year. Nominated for a total of 8 Grammy's. Eventually going on to selling more than 17 million copies worldwide. Going 6x platinum in the US alone. Complicated and Sk8r Boi both went #1 and the third single I'm With You reaching the top 5.
The Fame was released in 2008 and went on to selling more than 15 million albums worldwide. Nominated for a total of 6 Grammy's and winning 2 of them. Just Dance and Poker Face both peaked at #1 selling more than 6 million copies each. Launching the record breaking MB tour grossing $250 million dollars.
Which girl had more success with their debuts?