swollen stomachs and excess skin from pregnancy, they're not exempt from stretch marks, either, and these stars are all celebrating theirs.From Stacey Solomon to Lady Gaga, here are the celebs' photos and words proving that stretch marks are both natural and beautiful.SEE: Celebs' naked post-baby body photos: Kate Ferdinand, Gemma Atkinson, Kate Hudson, moreWATCH: Stacey Solomon shared a video showing off her stretch marks in an inspiration videoStacey also shared a photo while pregnant with her