How to modify “[Product] has been added to your cart” in WooCommerce?

I would like to change the “Product has been added to your cart.” text for variable products to include the variation.

For example if I added a size 7 Shoe to my cart it should say: “Shoe in Size 7 was added to your cart”

What do I have to edit to change this?

add_filter( 'wc_add_to_cart_message', 'my_add_to_cart_function', 10, 2 ); 

function my_add_to_cart_function( $message, $product_id ) { 
    $message = sprintf(esc_html__('« %s » has been added by to your cart.','woocommerce'), get_the_title( $product_id ) ); 
    return $message; 
}

The above code will help you to change the message. Since by knowing the hook wc_add_to_cart_message you can improve the code