Can i mix disney princess and toy story toys in the same collection?

Quick Answer
There is no evidence indicating any restriction, and since Disney owns both lines, you can mix them in a collection.
Explanation
The only verified information pertains to the Toy Story franchise, which is owned by The Walt Disney Company and includes a series of animated feature films and related media. The franchise centers on a cast of toys that are secretly alive, with its first film released in 1995. Disney’s ownership of the franchise means that Disney’s broader toy lines, such as Disney Princess, are also under the same corporate umbrella. No source in the provided evidence discusses any policy or compatibility issue between Disney Princess toys and Toy Story toys. Therefore, based on the available information, there is no reason to believe you cannot combine them in a collection, although no specific guidance is documented. If you need definitive policy details, you should consult Disney’s official toy licensing guidelines or contact a licensed retailer.