Lady Gaga sparked rumors again that she might be pregnant when she was seen wearing a form-fitting black dress on Friday evening. Gaga showed off what appeared to be a baby bump as well as a big diamond ring at the rehearsal dinner for her sister Natali Germanotta's wedding in York, Maine. In recent months, Gaga has been keeping a low profile after wrapping up filming for her upcoming movie Joker: Folie à Deux and as she continues working on a new album.