Sweetheart Neckline
Sweetheart Neckline
A neckline shaped like the top of a heart, with two curved arcs meeting at a center dip, creating a romantic, feminine look.
What Is a Sweetheart Neckline?
A sweetheart neckline traces the shape of the top half of a heart across the upper bust: two symmetrical curved arcs rise from the sides, peak over each breast, and dip to a gentle point at the centre. The shape simultaneously reveals the collarbone and upper chest while providing more coverage than a plunge or strapless straight cut, making it one of the most universally flattering neckline shapes in both fashion and lingerie.
The sweetheart neckline endures because it works optically. The twin curves mimic the natural contour of the bustline, making the neckline appear to flow naturally from the body rather than cutting across it. The centre dip creates a vertical line that visually lengthens the neck and narrows the torso. This is why the sweetheart neckline is a staple of bridal corsets, bustiers, and special-occasion lingerie — it photographs beautifully from every angle.
In quality construction, the curves should be reinforced with boning or firm interfacing to maintain the heart shape and prevent the fabric from collapsing or gaping away from the body. The edge is typically finished with a satin binding, lace trim, or rolled hem that follows the curve without puckering. A badly constructed sweetheart neckline will straighten out when worn, losing its distinctive shape and becoming a generic strapless top edge.
Sinderella features the sweetheart neckline on corset tops and bustier-style bra sets, where the boned construction holds the heart-shaped curve firmly in place throughout the evening.
How to Wear & Style
A sweetheart-neckline bustier or corset works as both lingerie and outerwear — pair it with high-waisted trousers and a blazer for a night out, or wear it on its own for a romantic evening. For gifting, sweetheart pieces signal classic romance without being overly bold, making them a safe yet striking choice. Layer a pendant necklace that drops into the centre dip to draw the eye along the neckline's curves.
Lingerie with Sweetheart Necklines
Browse corsets and bustiers featuring the classic heart-shaped neckline.
Browse BodysuitsFrequently Asked Questions
What is a sweetheart neckline?
A neckline shaped like the top of a heart, with two curved arcs meeting at a center dip, creating a romantic, feminine look.
Which body types does a sweetheart neckline flatter most?
The sweetheart neckline is universally flattering but particularly suits those who want to emphasise the collarbone and upper chest. It creates the illusion of a fuller bust on smaller frames and provides an elegant frame for larger busts without exposing too much. The centre dip draws the eye upward, which visually lengthens the neck.
What is the difference between a sweetheart neckline and a plunge neckline?
A sweetheart neckline dips gently at the centre with two symmetrical curves that stay at or above the bust line. A plunge neckline drops much deeper — often to the sternum or navel — in a V or U shape. The sweetheart is more conservative and structured, while the plunge is deliberately revealing. In lingerie, sweetheart necklines are common on corsets and bustiers, while plunge necklines appear on deep-V bras and bodysuits.