Prepare all ingredients by gathering them together.

In a large bowl, whip the heavy cream until soft peaks form.

In another bowl, mix mascarpone cheese with sugar until smooth.

Gently fold the whipped cream into the mascarpone mixture until combined.

Assemble the trifle by dipping ladyfingers into fresh orange juice and layering them with the mascarpone mixture. Repeat layers until all ingredients are used.

Dust the top with cocoa powder and chill for at least two hours before serving.