What collaborations has Meredith Masony engaged in for her 90s inspired shirt collection?

I'm sorry, but the available content doesn't directly address any collaborations that Meredith Masony has engaged in for her 90s inspired shirt collection.

Meredith Masony is known for her engaging content and collaborations with various brands. However, specific details about a 90s inspired shirt collection aren't available in the current content.

Would you like to know more about Meredith's other collaborations or her general fashion style?