These are all found in the Uranus zone.
Head over to the Uranus zone once you are in the area head to the (Jump space 7) bar you can't miss it. On the ground floor go to the corner area it has a L shape desk go behind it to and walk over to the t shirt rack and collect the Space girl outfit.
Next head across the street to the (Venus touch) in the back room by the sun beds on the shelf is the Space girl's hair.
And finally.
Exit the (Venus touch) and head right and just up the street on the left is (Bagged!) head in the store and to the right you will see a shelf with shoes on it and that's where you find the space girl boot's.
achievement unlocked.