American Idol Carrie Underwood and Jennifer Hudson to perform at Grammy Awards 01/19/2009 American Idol fourth-season champion Carrie Underwood and third-season finalist Jennifer Hudson have been announced as performers at the 51st Annual Grammy Awards. Read More RELATED NEWS Carrie Underwood says post-'American Idol' body shaming led to strict dietCarrie Underwood praises husband Mike Fisher on anniversaryCarrie Underwood to host 2019 CMA Awards without Brad Paisley TAGS: American Idol Jennifer Hudson Carrie Underwood Katy Perry Kenny Chesney Lil Wayne Spotlight