Use a strapless bra beneath a strapless or spaghetti string top. Strapless bras smooth out your form and provide basic support.
They might run a little tighter than a standard bra, however, since the band must provide full support in the absence of straps. Large cup size? You may also want to try going down a band size and up a cup size for a little extra hold. Choose a color that matches your top or stick with a neutral color.
A bra with super thin straps may coordinate well enough with a spaghetti strap top. The straps may not disappear completely beneath your top but as long as your bra straps do not exceed the thickness of your top's straps, you may be able to get away with showing your bra straps in casual settings.
Bustier is a close-fitting strapless top worn by women. Bustier. The bustier can better grip your body and support your chest without slipping. You may also want to try going down a band size and up a cup size for a little extra hold.
Nipple covers are also known as petals. are used to hide the shape of nipples and give breasts a smooth line under clothing. They have adhesive on them to stay on and can be one-use disposable or washable and reusable.