Boil Pasta: Start by bringing a large pot of salted water to a boil. Cook your pasta until al dente—usually about 8-10 minutes. Drain and rinse under cold water to stop the cooking process, then set aside to cool.

Prepare Shrimp: If you're using fresh shrimp, cook them in boiling water until they turn pink, about 2-3 minutes. For pre-cooked shrimp, simply chop them into bite-sized pieces and set aside.

Chop Veggies: Dice celery, red bell pepper, and red onion into small, uniform pieces. Finely chop the parsley for garnishing.

Mix Dressing: In a small mixing bowl, whisk together mayonnaise, sour cream, Dijon mustard, lemon juice, Old Bay seasoning, salt, and pepper until the mixture is smooth and creamy.

Combine Ingredients: In a large serving bowl, gently combine the cooled pasta, chopped shrimp, imitation crab, diced vegetables, and the creamy dressing. Toss everything until well-coated.

Chill Salad: Cover your pasta salad with plastic wrap and refrigerate it for at least 1 hour.

Optional: Garnish with extra parsley and a sprinkle of paprika just before serving.