For your consideration are two dolls made by Mattel. They are 9" tall and are made of vinyl with twist and turn bodies and bendable legs.
One doll is wearing a pink bath suit, shorts and shoes. Marked on the back of her neck is (c) 1978 Mattel, Philippines, on back (C) Mattel Inc. 1978 and on her butt (C) Mattel Inc. 1967, Philippines. The other is wearing a yellow and white dress. She is marked (C) Mattel Inc. 1967, Philippines on her butt.
Both are in good played with condition. The clothes are not original to the dolls. The one in the dress may have had her hair trimmed. I not positive the one in the pink is a Skipper doll.