Wearing halter tops if you have a bigger chest can be difficult. Wearing a normal bra with a halter top can look tacky, and not wearing a bra at all can be uncomfortable for some women. Halter-style bras--featuring one strap, instead of two, that is worn around the neck instead of over the shoulders--are around now to provide much-needed support and shaping. When worn correctly, a halter bra will not show at all.
Pull the single strap of your unclasped halter bra over your head and let it hang from your neck. Make sure that the cups hang over your breasts and that the inside of the bra is facing your breasts.
Pull the bra's cups over your breasts.
Clasp the bra behind your back.
Adjust the bra's neck strap as needed. If it is too tight, you can loosen it. If you find you are not getting the support you need, tighten it.
Pull your halter top on over your halter bra and see if the halter bra is hidden. If the halter bra is not hidden, you may want to find a different halter bra with a thinner strap or with a lower cut.