diff --git a/src/controllers/orderController.ts b/src/controllers/orderController.ts
index 74026b57..f04466ce 100644
--- a/src/controllers/orderController.ts
+++ b/src/controllers/orderController.ts
@@ -39,7 +39,7 @@ export const createOrder = async (req: Request, res: Response): Promise<void> =>
     }
 
     const [orderItems]: any = await sequelize.query(
-      'SELECT "productId", quantity FROM "CartsProducts" WHERE "cartId" = ?',
+      'SELECT "productId", "sizeId", quantity FROM "CartsProducts" WHERE "cartId" = ?',
       {
         replacements: [cart.id],
       }
@@ -47,27 +47,32 @@ export const createOrder = async (req: Request, res: Response): Promise<void> =>
 
     const sizes = await Promise.all(
       orderItems.map(async (item: any) => {
-        const product = await Product.findOne({
-          where: { id: item.productId },
-          include: {
-            model: Size,
-            as: 'sizes',
-            attributes: ['price'],
-          },
+        const productSize = await Size.findOne({
+          where: { id: item.sizeId },
+          attributes: ['id', 'price', 'discount'],
         });
 
-        if (!product) {
-          throw new Error(`Product with id ${item.productId} not found`);
+        if (!productSize) {
+          throw new Error(`Size with id ${item.sizeId} not found`);
         }
 
-        const size = product.sizes[0];
-        const totalSum = size.price * item.quantity;
+        const discountDecimal = 1 - productSize.discount / 100;
+        const discountedPrice = productSize.price * discountDecimal;
+        const sizeQtyPrice = discountedPrice * item.quantity;
 
-        return { productId: item.productId, quantity: item.quantity, price: size.price, totalSum };
+        return {
+          productId: item.productId,
+          sizeId: productSize.id,
+          quantity: item.quantity,
+          price: discountedPrice,
+          sizeQtyPrice,
+        };
       })
     );
 
-    const totalPrice = sizes.reduce((prev: number, cur: any) => prev + cur.totalSum, 0);
+    // combine all products sizes retrieved by flat()
+    const combinedproductsAndSizes = sizes.flat();
+    const totalPrice = combinedproductsAndSizes.reduce((prev: number, curr: any) => prev + curr.sizeQtyPrice, 0);
 
     const order = await Order.create({
       phone,
@@ -81,10 +86,11 @@ export const createOrder = async (req: Request, res: Response): Promise<void> =>
     });
 
     await Promise.all(
-      sizes.map(async (item: any) =>
+      combinedproductsAndSizes.map(async (item: any) =>
         OrderItems.create({
           orderId: order.id,
           productId: item.productId,
+          sizeId: item.sizeId,
           quantity: item.quantity,
           price: item.price,
         })
diff --git a/src/controllers/productsController.ts b/src/controllers/productsController.ts
index 00fd53b2..a1eb0245 100644
--- a/src/controllers/productsController.ts
+++ b/src/controllers/productsController.ts
@@ -13,9 +13,7 @@ import User from '../database/models/user';
 import { sendEmail } from '../helpers/send-email';
 import { destroyImage } from '../helpers/destroyImage';
 import { extractImageId } from '../helpers/extractImageId';
-// import Review, { ReviewAttributes } from '../database/models/Review';
 import Review, { ReviewAttributes } from '../database/models/Review';
-import Cart from '../database/models/cart';
 import Order from '../database/models/order';
 import OrderItems from '../database/models/orderItems';
 
diff --git a/src/database/migrations/20240527203432-add-sizeId-to-orderItems.js b/src/database/migrations/20240527203432-add-sizeId-to-orderItems.js
new file mode 100644
index 00000000..6265586f
--- /dev/null
+++ b/src/database/migrations/20240527203432-add-sizeId-to-orderItems.js
@@ -0,0 +1,20 @@
+'use strict';
+
+module.exports = {
+  up: async (queryInterface, Sequelize) => {
+    await queryInterface.addColumn('orderItems', 'sizeId', {
+      type: Sequelize.UUID,
+      allowNull: false,
+      references: {
+        model: 'sizes',
+        key: 'id',
+      },
+      onUpdate: 'CASCADE',
+      onDelete: 'CASCADE',
+    });
+  },
+
+  down: async (queryInterface, Sequelize) => {
+    await queryInterface.removeColumn('orderItems', 'sizeId');
+  },
+};
diff --git a/src/database/models/orderItems.ts b/src/database/models/orderItems.ts
index 2cafc934..3b3cd22e 100644
--- a/src/database/models/orderItems.ts
+++ b/src/database/models/orderItems.ts
@@ -2,11 +2,13 @@ import { DataTypes, Model, Optional, UUIDV4 } from 'sequelize';
 import sequelize from './index';
 import Order from './order';
 import { Product } from './Product';
+import { Size } from './Size';
 
 interface OrderItemsAttributes {
   id: string;
   orderId: string;
   productId: string;
+  sizeId: string;
   quantity: number;
   price: number;
   createdAt?: Date;
@@ -19,6 +21,7 @@ class OrderItems extends Model<OrderItemsAttributes, OrderItemCreationAttributes
   public id!: string;
   public orderId!: string;
   public productId!: string;
+  public sizeId!: string;
   public quantity!: number;
   public price!: number;
   public readonly createdAt!: Date;
@@ -52,6 +55,16 @@ OrderItems.init(
       onUpdate: 'CASCADE',
       onDelete: 'CASCADE',
     },
+    sizeId: {
+      type: DataTypes.UUID,
+      allowNull: false,
+      references: {
+        model: 'sizes',
+        key: 'id',
+      },
+      onUpdate: 'CASCADE',
+      onDelete: 'CASCADE',
+    },
     quantity: {
       type: DataTypes.INTEGER,
       allowNull: false,
@@ -80,6 +93,7 @@ OrderItems.init(
 
 OrderItems.belongsTo(Order, { foreignKey: 'orderId', as: 'orders' });
 OrderItems.belongsTo(Product, { foreignKey: 'productId', as: 'products' });
+OrderItems.belongsTo(Size, { foreignKey: 'sizeId', as: 'sizes' });
 
 Order.hasMany(OrderItems, { foreignKey: 'orderId', as: 'orderItems' });
 Product.hasMany(OrderItems, { foreignKey: 'productId', as: 'orderItems' });