Causeway Bay, being a bustling shopping district in Hong Kong, offers plenty of options to buy cake. One highly recommended place is Lady M, located in Lee Gardens Two. Lady M is renowned for its delicate and elegant mille crepes cakes, which are made up of paper-thin layers of crepes surrounded by light and creamy fillings. Another great option is the Mandarin Cake Shop at the Mandarin Oriental hotel. This shop offers a wide variety of beautifully crafted cakes, including their signature rose petal cake, known for its fragrant flavor and exquisite design. Both these establishments provide high-quality cakes that are sure to satisfy any cake lover's cravings.