She is best recognised for her voice roles as Louise Belcher on Bob's Burgers and Mabel Pines on Gravity Falls, as properly as for actively playing Mel on Flight of the Conchords, Hurshe Heartshe on The Heart, She Holler, and Carol Pilbasian on The Last Man on Earth. Jenna has managed to preserve her youthful visual appeal perfectly into her 40s. Similarly, Jameson stands around 5 toes and seven inches tall.