This Space Girl Cocktail Mug features a pinup wearing a flying saucer around her middle and with a plastic "helmet" that just goes around the face.

These were produced in a variety of colors and riffs, including a risqué version featuring a topless pinup with three breasts.

From Black Lagoon Designs:

"These mugs stand at 24cm tall by 13cm wide and hold approximately 550mls of your favorite cocktail OR mocktail! They are made by hand from white earthenware pottery, lead free food safe glaze and love. The clear plastic helmet component is attached with glue and resin, this is NOT removable, please be careful when handling the mug not to bump the helmet hard or bang off during cleaning."