The McD Barbie® set of dolls was an over-the-counter purchase which included two PVC figurines:

Teen Talk Barbie™ and Glitter Beach Barbie ™
and two hard plastic figurines:
Bride Barbie™ and Secret Hearts Barbie™

Each doll measures 10cm tall.
 
Each packet included a picture insert of each doll. A two-sided mobile measuring 48cm in diameter hung in each store.
One side shows the Barbie Dolls, the other side shows the X-Men Vehicles.