If I'm crunched for time I will put both of my kids in the shower together and bathe them...dd is 9 ..ds is 6. They don't care I just lather them up ,rinse them off and go about our day.
If I'm in the shower first ill call them in to shower with me one at a time or both at the same time...they don't care . Sometimes ds6 will see me showering and will request to come in and shower too . I let him in ....no big deal...
The only awkward moment we've ever had was when both of them asked why did I have hair down there and I told them everyone will get hair down there ur just a child now but when ur teenagers you'll get hair too and they giggled and said okay and dropped it . Never asked again.
I think some of you guys just have nasty thoughts and put them on your kids...if you don't care than your kids won't care. My kids see me naked all the time after I step out the shower...ds and dd will walk around naked after showering until I come in to get their pajamas ...they don't care or see it as taboo