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    Size 18D

    Shop our size 18D bras. Explore wire free full figure bras for all day comfort, lace balconettes for a lifted, feminine shape and lace underwire bras for structured support.

    NEW IN
    After Dark Out All Night Balconette Bra $34.95
    After Dark Twilight Dream D+ Balconette $34.95
    Alive Bandeau Bra $34.95
    Final Sale
    Final sale – while stocks last
    Alive Bandeau Bra $20.00 $34.95
    NEW IN
    Alive Bandeau Bra $34.95
    Alive Bandeau Bra $34.95
    NEW IN
    Alive Bandeau Bra $34.95
    Sale
    42% off for a limited time
    Alive Supportive Full Figure Wirefree Bra $20.00 $34.95
    Sale
    42% off for a limited time
    Alive Supportive Full Figure Wirefree Bra $20.00 $34.95
    Alive T-Shirt Bra $34.95
    Alive T-Shirt Bra $34.95
    NEW IN
    Alive T-Shirt Bra $34.95
    NEW IN
    Be Free Lace Balconette Bra $34.95
    Final Sale
    Final sale – while stocks last
    Brazilian Full Figure Contour Bra $10.00 $34.95
    Hold Up Epic Lace Underwire Bra $39.95
    Hold Up Epic Lace Underwire Bra $39.95
    Hold Up Epic Lace Underwire Bra $39.95
    NEW IN
    Hold Up Epic Lace Underwire Bra $39.95
    Best Seller
    Hold Up Iconic Unpadded T-Shirt Bra $39.95
    Hold Up Iconic Unpadded T-Shirt Bra $39.95
    Hold Up Iconic Unpadded T-Shirt Bra $39.95
    Hold Up Iconic Unpadded T-Shirt Bra $39.95
    NEW IN
    Hold Up Neo Mesh Underwire Bra $39.95
    NEW IN
    Hold Up Neo Mesh Underwire Bra $39.95
    You've viewed 24 of 31 products
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    Shop size 18D bras at Kayser, covering wirefree full-figure styles, smooth T-shirt bras, a lace balconette and our best-selling Hold Up collection.

    The Alive Supportive Full Figure Wirefree Bra is the standout for all-day comfort, delivering genuine full-cup support without underwire through wide, structured wings designed specifically for fuller busts. If you prefer underwire, the Total Comfort Luxe T-Shirt Bra adds soft lace detailing to a supportive everyday T-shirt shape, while the Brazilian Full Figure Contour Bra brings a lifted, contoured silhouette that works beautifully under lower necklines.

    For a more feminine option, the Be Free DD+ Balconette Bra offers a square-cut lace cup that flatters a fuller bust with a beautifully lifted shape. And for specialist full-bust construction, the Hold Up Epic Lace Underwire Bra delivers maximum lift and structured support in a gorgeous lace finish, ideal for special occasions or any day you want your bra to feel extraordinary. 

    Browse 18D bras alongside everyday underwear in size 18 to complete your lingerie wardrobe. Also explore 18DD for more cup volume, or 16D if you prefer a shorter, firmer band. Free AU delivery on orders over $75.*

    Size Guide

    Find your best fit.

    Size Guide
    Knickers
    CM IN
    Size Hip Waist
    XS (8) 92 - 97 59 - 64
    S (10) 97 - 102 64 - 69
    M (12) 102 - 107 69 - 74
    L (14) 107 - 112 74 - 79
    XL (16) 112 - 117 79 - 84
    2XL (18) 117 - 122 84 - 89
    3XL (20) 122 - 127 89 - 94
    4XL (22) 127 - 132 94 - 99
    Size Hip Waist
    XS (8) 36 - 38 23 - 25
    S (10) 38 - 40 25 - 27
    M (12) 40 - 42 27 - 29
    L (14) 42 - 44 29 - 31
    XL (16) 44 - 46 31 - 33
    2XL (18) 46 - 48 33 - 35
    3XL (20) 48 - 50 35 - 37
    4XL (22) 50 - 52 37 - 39
    Bodysuits, Camis & Chemises
    CM IN
    Size Hip Waist Underbust Cup
    XS (8) 92 - 97 59 - 64 62 - 67 AA - B
    S (10) 97 - 102 64 - 69 67 - 72 A - C
    M (12) 102 - 107 69 - 74 72 - 77 B - C
    L (14) 107 - 112 74 - 79 77 - 82 B - D
    XL (16) 112 - 117 79 - 84 82 - 87 C - D
    Size Hip Waist Underbust Cup
    XS (8) 36 - 38 23 - 25 24 - 26 AA - B
    S (10) 38 - 40 25 - 27 26 - 28 A - C
    M (12) 40 - 42 27 - 29 28 - 30 B - C
    L (14) 42 - 44 29 - 31 30 - 32 B - D
    XL (16) 44 - 46 31 - 33 32 - 34 C - D
    Soft Cup Bras
    CM IN
    Band
    Triangle Cup
    UK/USA 30 32 34 36 38
    AUS 8 10 12 14 16
    Underband (cm)
    62 - 67 67 - 72 72 - 77 77 - 82 82 - 87
    A S S/M M L XL
    B S S/M M L XL
    C S S/M M L XL
    D S S/M M L XL
    Underband (in)
    24 - 26 26 - 28 28 - 30 32 - 34 34 - 36
    A S S/M M L XL
    B S S/M M L XL
    C S S/M M L XL
    D S S/M M L XL
    Bra size calculation chart
    CM IN
    UK/USA 30 32 34 36 38
    AUS 8 10 12 14 16
    Underbust Measurement (cm)
    Measure firmly around ribcage, directly underneath breasts.
    62 - 67 67 - 72 72 - 77 77 - 82 82 - 87
    Overbust Measurement (cm)
    Measure loosely around fullest part of bust.
    AA 72 - 75 77 - 80 82 - 85 87 - 90 92 - 95
    A 75 - 77 80 - 82 85 - 87 90 - 92 95 - 97
    B 77 - 80 82 - 85 87 - 90 92 - 95 97 - 100
    C 80 - 82 85 - 87 90 - 92 95 - 97 100 - 102
    D 82 - 85 87 - 90 92 - 95 97 - 100 102 - 105
    DD 85 - 87 90 - 92 95 - 97 100 - 102 105 - 107
    E 92 - 95 97 - 100 102 - 105 107 - 110
    F 95 - 97 100 - 102 105 - 107 110 - 112
    G 102 - 105 107 - 110 112 - 115
    H 105 - 107 110 - 112 115 - 117
    Underbust Measurement (in)
    Measure firmly around ribcage, directly underneath breasts.
    24 - 26 26 - 28 28 - 30 30 - 32 32 - 34
    Overbust Measurement (in)
    Measure loosely around fullest part of bust.
    AA 28 - 29 30 - 31 32 - 33 34 - 35 36 - 37
    A 29 - 30 31 - 32 33 - 34 35 - 36 37 - 38
    B 30 - 31 32 - 33 34 - 35 36 - 37 38 - 39
    C 31 - 32 33 - 34 35 - 36 37 - 38 39 - 40
    D 32 - 33 34 - 35 36 - 37 38 - 39 40 - 41
    DD 33 - 34 35 - 36 37 - 38 39 - 40 41 - 42
    E 36 - 37 38 - 39 40 - 41 42 - 43
    F 37 - 38 39 - 40 41 - 42 43 - 44
    G 40 - 41 42 - 43 44 - 45
    H 42 - 43 44 - 45 46 - 47

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