What to wear under a cardigan?

experiment....

i only wear a cardigan over tee's. it just looks too preppy for me over a button up.

A crewneck tee, button-down, polo, henley...your choice.

Depending on the fit, I match my cardigans sometimes with an American Apparel thermal henley: http://store.americanapparel.ca/t457.html or a basic v-neck http://store.americanapparel.ca/2456.html

Button up shirt with a narrow repp tie.

Signed

White or gray heather v-neck tees are my usual choices. American Apparel and J. Crew have the best IMO.

I like how the pennsy cardigan looks over the jean jacket in the Engineered Garments lookbook, but I reckon you need a large cardigan and small jean jacket for that to work.

you can wear a cardigan with anything.

another cardigan

Breasts?

thread over

Keep it simple, a nice tee or button-up will do.

If you're doing the young hipster thing with the cardigan being really slim and fitted then something like a stripped v-neck tee will do fine.

The fact that it's a cardigan is unique enough, no need to throw in anything too busy.