Jessica Simpson short skirt tan hair

Whoops!

The engaged singer slash actress visited a studio in Hollywood on Monday for a super-sexy photo shoot and, while we admit that Ms. Jessica Simpson was positively glowing upon leaving, she also managed to forget her pants! Or I guess Jess is wearing some sort of dress?

Either way, what matters is that she's looking slimmer than usual. Thank the lord for that AND her fiance's "perfect tush"!