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    Shop 2026 ANNAKOO Halter Keyhole Long Sleeves Trumpet Mermaid Black Prom Dress Under 298
    Shop 2026 ANNAKOO Halter Keyhole Long Sleeves Trumpet Mermaid Black Prom Dress Under 298
    Shop 2026 ANNAKOO Halter Keyhole Long Sleeves Trumpet Mermaid Black Prom Dress Under 298
    Shop 2026 ANNAKOO Halter Keyhole Long Sleeves Trumpet Mermaid Black Prom Dress Under 298
    Shop 2026 ANNAKOO Halter Keyhole Long Sleeves Trumpet Mermaid Black Prom Dress Under 298
    Shop 2026 ANNAKOO Halter Keyhole Long Sleeves Trumpet Mermaid Black Prom Dress Under 298
    Shop 2026 ANNAKOO Halter Keyhole Long Sleeves Trumpet Mermaid Black Prom Dress Under 298

    Halter Keyhole Long Sleeves Trumpet Mermaid Black Prom Dress

    $298.00

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    ANNAKOO Custom Textile · Midnight Noir

    Black, Sculpted in Light

     

    A dramatic black trumpet mermaid prom dress designed around contrast. ANNAKOO's custom black tulle is decorated with dimensional black flowers, black beads and silver embellishment, creating a surface that reveals different details as it catches the light.

    ANNAKOO custom black tulle fabric with black flowers black beads and silver sequin embellishment
    Fabric Close Up

    The detail appears after the black.

    The black mesh creates a deep monochromatic foundation, allowing the dimensional flowers to remain subtle while silver and black beadwork introduces points of reflection.

    From a distance, the fabric reads as sophisticated black. Up close, its layered embroidery reveals the craftsmanship.

    The Noir Material System

    Five layers create the midnight surface

    Tulle

    Lightweight black mesh forms the base of the custom textile.

    Flowers

    Raised black floral motifs add physical depth to the surface.

    Black Beads

    Dark beadwork creates texture without interrupting the monochrome mood.

    Silver

    Silver beads and sequins introduce controlled reflective highlights.

    Embroidery

    Decorative bead paths connect the flowers into a continuous pattern.

    Black On Black

    Subtle in color. Dramatic in texture.

    The beauty of the custom fabric comes from keeping the flowers and foundation within the same black color family.

    Black Tulle

    Creates a sheer and lightweight foundation beneath the embellishment.

    Black Flowers

    Raised floral motifs become visible through their texture and shadow.

    Silver Beadwork

    Metallic highlights define the decorative paths and bring the fabric alive under evening light.

    Constellation Beadwork

    The embellishment travels across the fabric like a constellation

    Cluster

    Small black and silver beads gather around selected floral areas, creating concentrated points of texture.

    Line

    Curving sequin and bead lines connect individual floral motifs across the mesh.

    Reflection

    Silver elements catch changing light while the black embellishment keeps the overall look sophisticated.

    Neckline Architecture

    Halter structure meets a precise keyhole opening.

    The halter neckline creates a strong vertical line through the upper body, while the keyhole detail introduces a controlled opening that breaks up the dark surface.

    Against the black embellished fabric, this contrast gives the gown a confident evening character without relying on a bright color palette.

    Sleeve Detail

    Long sleeves extend the midnight texture.

    The long sleeve design allows the custom embellished surface to continue along the arms, creating visual continuity from the neckline through the bodice.

    The result is a sophisticated balance of coverage, transparency and dimensional decoration.

    Silhouette Engineering

    Fitted through the body. Dramatic at the hem.

    Defined Waist

    The natural waist provides a clear transition between the fitted bodice and the lower silhouette.

    Trumpet Fit

    The skirt follows the body before gradually opening toward the lower portion of the dress.

    Mermaid Finish

    The flared lower section creates the dramatic movement expected from a formal trumpet mermaid gown.

    Styling Direction

    Keep the accessories sharp and intentional.

    Silver

    Silver earrings or bracelets echo the metallic beadwork without competing with the dress.

    Crystal

    Clear crystal accessories can enhance the reflective details for a stronger evening effect.

    Minimal

    Because the fabric already carries substantial detail, restrained accessories allow the custom textile to remain the focal point.

    Product Profile

    Essential details

    Silhouette Trumpet Mermaid
    Neckline Halter
    Key Detail Keyhole
    Length Floor Length
    Fabric Custom Embellished Black Tulle
    Sleeves Long Sleeves
    Embellishment Black & Silver Beads and Sequins
    Back Zipper Up
    Shown Color Black
    Style Chic & Modern
    ANNAKOO Custom Textile

    Designed specifically for a dramatic black gown

    ANNAKOO develops custom fabrics to create a specific visual relationship between the dress silhouette and its surface decoration. For this design, the black base allows the dimensional flowers and beadwork to remain sophisticated rather than overly bright.

    The combination of black beads, silver embellishment and textured floral motifs gives the fabric a layered appearance that is especially striking under evening lighting.

    Custom Made Available    |    Tailoring Time: 12–15 Days
    A Black Mermaid Prom Dress With Dimensional Beadwork

    This black halter keyhole prom dress combines long sleeves with a dramatic trumpet mermaid silhouette and ANNAKOO's custom embellished black tulle. Dimensional black flowers are surrounded by black and silver beadwork and reflective sequins, creating subtle texture against the dark mesh. The keyhole neckline adds a controlled modern detail, while the fitted mermaid shape creates a graceful formal silhouette. Designed for prom, evening events and other special occasions, this black beaded prom dress offers a distinctive alternative to conventional solid black gowns.

    How To Measure

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