Arielle is a 3-pound Vegas showgirl whose look has been the blueprint for every one of Cher’s Academy Awards outfits. She’s also a long-haired chihuahua. Built for love and affection, she’s not particularly athletic and cannot, due to her diminutive stature, climb stairs without pitons, ropes and better insurance. But she sure can hang nicely with other dogs and people, and, with the aid of disarming cuteness, clear negativity from a room like a stick of burning sage. Come meet her. Bring a fur-lined fanny pack to carry her home.