Hey-i got stuck on this level with one star, so i just went on and some of the items u recieve or that become available later in the game are useful to get three stars but in the end this is what got me three stars:
-purple flowy shirt w spaghetti straps
-white blazer
-black skirt with white triangles design
-black pumps heels
-the gold circlet necklace thats basically made up of three rows of gold circles
-gold earrings that have a stud and a hoop dangling off the stud
-gold cuff bracelet
-white clutch bag with a gold bar at the top
-white ring (i dont think this is really necessary but)
-shimmery bronze eyeshadow that sort of surrrounds the eye
-black lashes
-glossy sort of light brown/beige lipstick, sort of a peach color, glossy
-light dusting of pink blush, not too obvious
-black hair that is sort of poufy on the top, has a side part and curls at the front but mostly straight at the back...sort of reminds me of a game show host's hair. this hair only become available in the salon quite later in the game, so i would maybe suggest using a different color other than black.
Hope that helps! if anyone has any suggestions for level 46, "Totes Normal" i would appreciate it :)