I'm going to have to go with Madonna.
Early era stuff especially. She was my idol for so many years with her poppy goodness and videos (I'm thinking of the golden age of MTV before they started showing more programming and fewer videos).
And I give her great credit these days for making it through more than 25 years in the industry without fucking up too badly or destroying herself with drugs/drink.
And even though she is a bit older than me (not a huge amount...some 15 years or so I think) I would still not kick her out of bed for eating cookies....