Beyonce Warming Up to Blue Ivy

0608-beyonce-baby-blue-ivyTouring is tough, and Beyonce's figure out a way to keep the heat on ... in a good way.

B posted a photo of herself with her only child, Blue Ivy, relaxing in a jacuzzi.

It's clear from the photo, mother and daughter are crazy in love.

BTdubs -- pregnant women can safely jacuzzi if the temp is below 100. Just sayin'.