Make birthdays extra sweet with the Heart Cake Happy Birthday Card—a deliciously charming design that celebrates love and cake in perfect harmony. This A6 folded card (6.25x4.5") features a pink heart-shaped birthday cake complete with a flickering candle, illustrated by Isabelle with all the warmth and whimsy your special someone deserves. Printed in the USA on sustainably produced 18pt coated card stock, this die-cut card brings joy to every birthday moment. The blank interior is your canvas for personalized birthday wishes, inside jokes, or heartfelt messages that make the day truly theirs. Each card arrives with a natural brown kraft recycled envelope and protective cello wrapping, ready to brighten someone's birthday mail. Whether you're celebrating a milestone, a loved one's special day, or just want to send extra love on their birthday, this card delivers sweetness with style. Part of our Birthday Collection, it pairs beautifully with other designs to create a coordinated celebration. Made with care by French hands in the USA, it's the kind of card that turns a simple birthday greeting into a cherished keepsake—one heart-shaped cake at a time.