Combine sugar and water in a small saucepan, stirring until sugar dissolves. Bring mixture to a boil over medium-high heat. Remove from heat.
Place sugar mixture, strawberries, and lemon juice in a blender; process until smooth. Pour pureed strawberry mixture through a sieve over a medium bowl, reserving liquid. Discard solids.
Place 3 tablespoons strawberry mixture into each of 8 Champagne flutes. Pour 1/3 cup wine into each flute.