Could Britney Spears also be gracing the guestlist? This image appears in the gallery:Lady Gaga's Wedding Guests! Which Of These Celebs Will Bag An Invite When She Weds Taylor? 9. Could Britney Spears also be gracing the guestlist? 23 images See the full gallery: Lady Gaga's Wedding Guests! Which Of These Celebs Will Bag An Invite When She Weds Taylor?