Fettuccine with Ranch Dressing and Shrimp

1/2 pound uncooked fettuccine
1/2 pound cooked and shelled shrimp
1 1/2 cups ranch dressing
1/2 cup cooked peas
1/4 cup sour cream
1/4 cup grated parmesan cheese

Cook fettuccine according to package directions. In a small bowl, combine ranch dressing, sour cream and parmesan cheese. In large bowl, combine the fettuccine and sauce. Add in shrimp and peas. Sprinkle parmesan cheese on top.