Place strawberries, kiwis, and a little bit of seltzer (enough to keep the fruit blending evenly) into the bowl of a food processor and blend until mixture is mostly smooth.
Strain fruit mixture and pour into blender. Add remaining amount of seltzer, ice, agave nectar, moscato, and lime juice and blend all until smooth.
For an extra snazzy twist for serving, roll the outside rim of a glass in water, and then in granulated sugar until rim is coated completely. Add ice to glass and pour moscato mixture over top. Garnish with additional fruit if you'd like.