They do

Bowsette then said, "Fine. If you feel we need a condom, I'm not against that. Though it might be a problem since I'm not sure where to find one big enough."

"Not a problem!" She then calls for a Toad servant. "Bring us the biggest condom you have. The largest one you can find."

A Toad servant brings her a large condom. "Will this do, Princess?"

Peach looked at the size. "This will have to do."

The servant saw Bowsette and was confused. "Ummm...who is...?"

"What have I said before? No question when your princess is horny! Now leave!"

"Sorry, Your Highness." The servant left.

"Okay, now I need to try and get this big boy on." Peach said.

Peach stretch the condom to cover the length of Bowsette's shaft and managed to fit it over her dick.

"Princess, I can't help but feel like you are more experienced at this."

"I'll be honest, I'm kind of a closet perv. I've practiced this for a while now."

"I never knew. Wait...have you been with other guys?"

"Well, Mario of course. But also some of my servants. It's not as many people as you may think. But I don't talk about it because it's not proper princess behavior."

"And here you are like a bitch in heat!"

"Yeah but can you blame me? I've never had a dick girl before! Now, let's fuck!"