"Dyn-O-Mite" was copyrighted, I'm sure.
The girl in the middle has the expression of a giantess regarding the gifts brought to her by her Lilliputian worshippers. The girt on the left is wearing a Holly Hobbie shirt, designed by Holly Hobbie. Wikipedia:
As a contract artist, Hobbie worked with the Humorous Planning department at American Greetings under art director Rex Connors, who was responsible for launching "blue girl" as the most identifiable of the Hobbie characters.
Humorous Planning Department.