Am I valid to feel a little hurt/upset by this?

So all my life, I’ve been in the shadow of my older sister. She’s smarter, more creatively talented, and way prettier than me. My own parents even have said that she’s good at everything. The two areas that I really shine at are baking and photography. This year for Thanksgiving, I will be making a strawberry mascarpone pie and have been talking about it since she came back from Alaska. When we went shopping, my dad reached for a pumpkin pie but my sister told him not to get it because she’ll make one. I’m not sure why, but that kind of struck a nerve with me and made me upset. Am I valid in feeling this way or am I just being ridiculous? Because I feel like I’m being ridiculous but I also can’t help how I feel.

Am I valid to feel a little hurt/upset by this?
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