a white dog who loves to get dirty?

[the L eagle (DaRk WiNgS)]

ok well i have a 6 month old dog, shes all white . the problem is that everytime shes out in the yard , she gets dirty faster than any other dog ,since her color shows everything , so i give her a bath whenever shes dirty ,but its getting too much to tell u the truth , cuz every lil dust will show on her , she loves baths but i dont think its good for her to have many ! . i had a german sheperd before ,and ofcourse german sheperds coat dont really show dirt unless its obvious ! . shes an indoor dog but she loves staying out more (if she doesnt get out shed bark till shes allowed to) . should i ignore the dirt ? how often should i give her a bath? . she seems happy when shes dirty though ! lol .thanks
p.s shes a small sized dog