For the quickest payoff, we boiled it down to the essentials.

You’ll needA pair of light (2- to 5-pound) and heavy (5- to 10-pound) dumbbells.

The lighter weights work smaller muscles; the heftier ones sculpt larger muscles.

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The planDo two sets of each move two or three times a week on nonconsecutive days.

Then dare to bare in a cute little sleeveless number.

Return to start for 1 rep. Do 15 reps. Switch legs; repeat.

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Lift upper body and arms (as shown) to start.

Keeping upper body lifted, bring arms forward, shoulders next to ears.

Pause; return to start.

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Draw weights to armpits, elbows bent, to start.

Straighten arms to sides at an angle (as shown); return to start.

Do 12 reps. Switch legs; repeat.

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Return to start for 1 rep. Do 12 reps. Switch sides; repeat.

Bend knees and lean forward as you reach right hand toward left foot (as shown).

Straighten legs, drawing right weight to waist.

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Do 15 reps. Switch sides; repeat.

Sit up until abs engage as you straighten arms in front of you (as shown).

Do 15 reps.

Video!Sexy Sundress Arms

Summer’s Prettiest Sundresses

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