01 - Combine milk, vanilla ice cream, strawberries, and sugar in blender. Blend on high speed until completely smooth and creamy.
02 - Taste the blended mixture and add additional sugar if needed to achieve desired sweetness level.
03 - Pour the strawberry milkshake evenly into two tall glasses, filling each to about ¾ full.
04 - Top each glass with a generous swirl of whipped cream and immediately sprinkle rainbow sprinkles over the cream.
05 - Serve immediately with straws while the milkshake is cold and the sprinkles are vibrant.