her 4th album to cross this milestone    Let Go - 1,288,919,633 The Best Damn Thing - 754,374,114 Goodbye Lullaby - 630,955,353 Avril Lavigne - 500,146,490 Under My Skin - 391,673,464 Head Above Water - 337,912,583 Love Sux - 137,204,585     Here's To Never Growing Up - 173,835,377 Let Me Go - 65,399,120 Rock N Roll - 57,771,509 Hello Kitty - 43,355,796 Give You What You Like - 38,767,781 Bad Girl - 27,494,473 How You Remind Me - 13,316,415