Boil Pasta: Fill a large pot with water, add salt, and bring to a boil. Add small pasta shapes and cook for 8-10 minutes until al dente. Drain and rinse under cold water to cool.

Prepare Seafood: Cook fresh shrimp in boiling water for 2-3 minutes until pink. If using pre-cooked shrimp, chop them.

Chop Vegetables: Finely dice celery, red bell pepper, and red onion. Chop fresh parsley for garnish.

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

Combine Ingredients: In a large bowl, add cooled pasta, seafood, vegetables, and dressing. Gently toss to combine.

Chill the Salad: Cover and refrigerate for at least 1 hour to let flavors meld.

Garnish and Serve: Stir the salad, then garnish with parsley and paprika before serving.