So do I just add this to the rest fo the files that I have for the default skins of do I have to delete some of them?

Here's  a link to just one of the many speedo-type swim/underwear for teen boys that the creator says is a Maxis mesh.  The sexy feet don't show on this skin.  

http://www.modthesims2.com/showthread.php?t=158153

I don't have either of those files in my game.  Like I said, I don't have any custom meshes for teens in my game, male or female.  I don't let teens last long, I send them to University as soon as they grow from kids so I don't need a lot of custom skins for the teens cluttering up the game.

Now I am confused.   I've downloaded several teen swimwear/underwear files from different sites that are the speedo-type tight swim suit and all of them say they don't require any additional mesh; they are recolors of a Maxis mesh and only the base game is required.  I've checked the files with SimPe and there are no meshes included in the collection of skins so there wasn't any special mesh that was installed with them that I didn't know about.  They all show up in the game and bodyshop, but the Sexy feet don't show up with them.  I'm confused as to what Maxis mesh is being used for them since I can't recall any nude-type mesh that came with the original game.

If there is no default nude mesh, what mesh is used when my teen males get nude and the sexy feet show?

Yes I am absolutely sure I have no other meshes for teens installed.

I'm having a problem with my male teens.  The sexy feet are not showing up with swimwear or pj's that were made on the default teen nude mesh.  The only mesh they show up on for those two categories are the default swim boxer trunks and the default long legged pj meshes.  I have a lot of swimwear/sleepwear that was done on the nude mesh but none of them show the sexy feet.  The sexy feet do show up when the sim is nude.

On the other hand, all the swimwear and sleepwear for the teen female show the sexy feet even though they are done on the nude mesh.  

Why does it work for the female, but not the male teen?

I don't have any other default replacements installed in my game.  I'm certain of that.  Your seay feet replacement is the first default replacement I've tried.

I guess Kathy isn't updating her hacks anymore.  Too bad, she had some really good ones.

I guess Kathy isn't updating her hacks anymore.  Too bad, she had some really good ones.

I guess Kathy isn't updating her hacks anymore.  Too bad, she had some really good ones.

I'm kind of confused here.  Are these skins for the Slim Bodybuilder or the Huge Bodybuilder?  One mesh link is for the slim guy and the other is for the huge guy.  If they're for both, how do determine which file is for which body type.  Since I only have the Slim Bodybuilder meshes in my game, I don't want the skins for the huge guy.  Thanks

I just started using the sexy feet files and they're GREAT.  I hated to Maxis feet that looked like shoes with toes painted on them.

When I have this mod installed, none of my sims can sunbathe at all.  The action falls out of queue.

I'm getting the same results as ilikefishfood on vacation lots.  The action falls out of queue before the sim combs for seashells.

Bless you, bless you, bless you!!!

Edited to say I guess I spoke too soon.  With this hack installed, my sims can't build sandcastles at all.  It keeps falling out of queue.  I get the same type of results with your no autonomous sunbathing and combing for seashells mods.

I love these meshes.  I just got Bon Voyage and boy was I surprised when I sent my slim bodybuilder to the sauna and massage table and he turned into a Bob Newbie look-alike when he changed into the towel.  Is there any way to make "towel proof" versions like the "shower proof" skins?