* Lulu's: Lulu's has a wide selection of white ruffle dresses, including some that are very similar to Carrie Underwood's dress. Prices start at around $50.
* ASOS: ASOS also has a large selection of white ruffle dresses, including some that are very similar to Carrie Underwood's dress. Prices start at around $40.
* Nordstrom: Nordstrom has a smaller selection of white ruffle dresses, but they do have a few options that are very similar to Carrie Underwood's dress. Prices start at around $100.
* Revolve: Revolve has a few white ruffle dresses that are very similar to Carrie Underwood's dress. Prices start at around $150.
* Shopbop: Shopbop has a few white ruffle dresses that are very similar to Carrie Underwood's dress. Prices start at around $200.
In addition to these stores, you may also be able to find a white ruffle dress like Carrie Underwood's at a local boutique or department store.