My girlfriend has an idea for my birthday but I’m afraid of it being too expensive and I feel bad?

My girlfriend had an idea for my birthday where she can take me to the mall and have a shopping spree day. Basically we’d go to the mall to whatever store (s) I want to and she’ll buy me whatever I want for the whole day there. It sounds like a cool idea but I’d feel bad about the cost
My girlfriend has an idea for my birthday but I’m afraid of it being too expensive and I feel bad?
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