Photo: Jonathon Kambouris

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Old School: Bra straps need to stay undercover.

New Rule: With so many beautiful options available now, it would be a shame to let your bra straps stay in hiding. Look for this season's sweet and sexy straps with details so pretty that any slippage looks stylish.
Clockwise from top left:
Heidi Klum Intimates, $95;
B.Temp'd, $39;
$40; for bra-and-panty set ($20 for your first set with code OPRAH20);