Though you have to wonder considering that Galactus is a giant and is literally standing over tons of people how much the pants really help.
PASSERBY: AHHH! I can see up his skirt!
GALACTUS: Judge not, mortal. The fashion choices of Galactus are beyond such as yourself.
PASSERBY: OH MY GOD!! THEY'RE NOT PANTS AT ALL! JUST LEGGINGS! I CAN SEE EVERYTHING!
GALACTUS: Galactus is not bound by your mortal conception of modesty Galactus is beyond good and evil. Galactus does what he must--- goes where he must-- AND WHERE GALACTUS GOES, GALACTUS GOES COMMANDO!