start with the vanity and counter. Too white for the beautiful tiles on the wall. The black counter also seems to stick out. No advice about the tub area because I can not see it in either photo.

Since you are redoing it, would it make more sense to make it a hallway entry bathroom and forget Jack and Jill. Can you share a floor plan?

I'd stick with a white hex floor tile, which is transitional and can evolve over time to match however you switch up the decor. With the right lighting, nice shower curtain and towels, and warm hardware, it need not feel sterile.

I see no need to tile the vanity wall. Paint it and you will have much more flexibility in the future.

These bathrooms might not be your specific tastes but you can see how many different looks can evolve from white hex floor and white subway wall.

Classic Modern Bathroom Project · More Info

Bird Rock · More Info

This is a very adult space now. I can't imagine those mirrors in a child's space. There must be stools if they want to see themselves. Two sinks?!! Two doors?! No wait there are THREE doors?? A private toilet room... This bathroom has so much wasted footage in DOORS!! and walls. And yes what does the bath/shower area look like??? The counter goes with the floor and accessories but for sure not a bright, light appearing space. Is there more tile in the bath/shower area??? First we need a scaled drawing of the bathroom and perhaps the attached rooms. Gutting and eliminating the jack and jill would be a space saver as a rule but without a drawing we have no idea your possibilities or constraints. What is your budget? Removing the tile behind the mirrors is a chore. You don't have to retile. There really is no need for that much tile there. Paint would be all that's needed. Some might wall paper but I am not a fan of paper in a high humidity area. If you eliminate one sink and go with a traditional four inch back splash, find one large scale mirror you would increase your counter space, visibility for washing, hair, make up etc. and brighten up the alcove. These girls will need the counter space all too soon and complete privacy will be their desire.

I like @Kendrah suggestion of a classic white hex tile for the floor,

for the vanity wall, i’d fully mirror that wall and pull a nice light fixture thru the mirror to float on the glass, it is clean look and lots of mirror is helpful for getting ready etc

With girls, I would also consider doing recessed medicine cabinets over their vanity. They give you lots of easily accessible storage.

How old are the girls? Do they ever use the bathroom at the same time? If not, 1 center sink in the vanity with drawers on either side gives them plenty of space for their own storage and more counter space for getting ready. If you can draw a floor plan with measurements, including all door openings and where they lead, it would be helpful.

My girls are 5 and almost 3! I foresee them both using the bathroom at the same time, as they do now with brushing teeth and doing bedtime routines.

I don’t have a floor plan, but the doors lead to the bedrooms, not the hallway. I was going to make one of the doors a pocket door (the one with the towels hanging on it), because they waste so much space otherwise.

I’ve attached more pictures! Two are the “entrances” to the bathroom from the adjoining rooms, then the tub/shower, and the added on toilet room.

I worry about using all white, with white grout, the discoloration but I love that it can be used through all phases of life.

This bathroom seems totally fine to me. I think I'd just hang simpler mirrors and lights, and then focus on getting some color in there in ways that are temporary but appropriate to your kids' current ages -- a fun shower curtain, some colorful rugs and towels. There will be time to redo later, maybe in honor of somebody turning 10 or 12. :)

If you put a gun to my head, I guess I'd do light grey floor tiles, large format, paint the cabinet blue, remove the wall tile, and go all white or pale lavender walls. Done. Easy to live with or update with paint.

" I don’t have a floor plan "

Grab a pc of graph paper, panecil adn tape measure and make one. Take an hour to fill in all the dimensions but the advice will definitely be better and more specific.

Other than the the colors clashing, you just described exactly what you have without having to spend 40K to change it. I'd spend 9K to change the clashing floors to work with the timeless walls and be done with it.

What is the problem you are trying to solve?

Well I will tell you the war will be on once they are both teens so I agree 2 bathrooms would be my plan. I had a sister my Dad had to make another bathroom by the time we were teens . I ilke a simple 12 x24 tile for bathroom floor and shower walls in , a nice neutral color , matching grout and IMO simple always timeless too. Easy to clean and allows for change in accessories, wall color etc .

Will suggest that you go lighter in this bathroom. The current color scheme is a bit disjointed but all of the colors seem rather drab.