Space-faring aliens visit planet Earth for a holiday to enjoy some soothing sunbathing in Hawaii. They complain that there isn't enough bright sunshine after waiting for the Earth to be at its closest distance to the Sun as well as clear cloudless skies plus the right level of humidity and almost no pollutants in the air.
Disregarding the safety of all inhabitants, including the alien visitors, how can the aliens tweak the Sun to achieve, at least, 1000,000 lux at sea level? (This about a tenfold increase in direct sunlight.) Assume the aliens are transitioning to type 3 civilization on the Kardashev scale.