Spa City Cupcakes shuttered its doors Sunday, barely into its second year of business in the Downstreet Marketplace.

Owners Rachel and Joe St. Martin had just expanded their colorful sweets shop in July, and had moved into a bigger space, upgraded the menu and started selling cupcake merchandise in addition to coffee and sugary concoctions of all flavors.

A message on the shop’s Web site, http://www.spacitycupcakes.com, said the couple is closing the shop so they can focus their attention on their 1-year-old son, Atticus.

“Thank you so much for your patronage over the last year,” the St. Martins posted on the Web site. “It has been so exciting and fun getting to know our fellow cupcake fans. We will miss sharing our love of all things buttercream with you!”

There’s icing on the farewell cake, however: A new 1950s-style “Cupcakery Café” is taking over the space. It’s called Bettie’s Cakes and it’s expected to open Nov. 6, according to owner Lorraine Murphy’s Facebook page.