Hey wait I like the fireman outfit 

My opinion, Yes and no LOL
Its gonna take more then the mones to do it. She has to have a desire to do it. Now if she wore certain mones it could increase her desire a little by making her feel more sexy thus automatically she will revert back to old behavoir. This is seen alot with Isexiness.
You wearing some sexual masculine mones will help her become more aroused. Like TUTH or AMMO. Wont make her put on the thong and stockings though.
Your best bet is to gently and I mean gently drop some hints. Show her that you still find her sexy even though she has spit up on her shirt. Kids are a great joy but they suck all the energy and will out of you in those early years. Life becomes about them and there is no way around that for parents. You learn to deal with it and find ways around it.
Be sure to get a babysitter at least twice a month and get out just you and her. Go somewhere nice so she can dress up and feel sexy. Then gently bring up the subject telling her how sexy she looks and how you miss that but you understand because the kids make it harder.
Christmas is coming, Hit Victoria secrets with all the rest of the embarrassed men and pick up some sexy things for her. If you really cant bring yourself to do it ask a female relative or friend to do it for you. I shop for a few male friends, girlfriends because they are to embarrassed to do it and dont know what to get.
Now if she is feeling unsexy because of mom issues or just dosnt have time to spend in the bathroom anymore, which believe me is a problem when you have kids… I have 2 kids and when they were little as soon as you entered the bathroom they were outside the door yelling MAAAAAA. Anyways back on subject… You can spend time working out with her which can get both your endorphins flowing and lead to fun. You can pick up some bath goodies at the VS and give her those so she can have some beauty time to her self. Keep the kids away from the door though… better yet put on a video for them to watch and sneak in there with her. If they stand outside the door yelling “what ya doing in there” tell them mom has a splinter I gotta get out or something LOL My hubby used to come up with some really good ones. (snort)
You can get her a Gift certificate to go to your local spa for a pamper day. Have that be from the kids and she will still know its from you.
I know you work all day and are tired to but kids really are harder then work. They need constant attention and you dont get to take a break often. Just remember if all else fails they do grow up and it gets easier. Mine are 21 and 14 now and I kinda miss getting splinters in the bathroom.
Then again dont rule out a sexy fireman outfit, put it on, get in there and start some fires. 
Tisha