In super princess peach she can engulf her entire body in fire so I'm sure she could blow fire in that state
Hey, Mario!Huh?Looks like it, huh? Well, you're wrong - It's me, Bowser!Princess Peach?Look who the princess dressed up as!Can Peach do this!?How did she put that Bowser costume together so quickly?Geugh!Aaaagh!FWOOOM