Use an electric mixer to beat pudding mix and milk until smooth.
Cover the bottom of a trifle dish or glass bowl with vanilla wafers.
Layer banana slices on top of the Vanilla wafers.
Arrange Twinkie slices in a circle around the edge of the bowl so that they press against the glass with the cut side toward the glass. Fill in the middle with Twnkie slices.
Pour half the pudding mix on top and use a rubber spatula to smooth it out and work it down into the cracks.
Repeat with another layer of Vanilla wafers and banana slices.
Pour remaining pudding on top and smooth it out.
Arrange twinkie slices around the perimeter, with the cut sides up, pressing them down some into the pudding.
Whip the cream gradually adding sugar as you whip it. Stop when it forms stiff peaks.
Spread whipped cream in the middle, up to and around the Twinkies, but not on top of them.
Place 1 Twinkie slice in the very middle and arrange a circle of Vanilla Wafers around it. Cover with plastic wrap and refrigerate for at least 2-3 hours before serving.