"I got them this morning. They had little diamonds in the middle of each rose! They're beautiful," New!magazine quoted Houghton as saying.
"I've asked the florist who they're from, but the bloke keeps laughing. Even when I've pressed them, they won't give me any details. They said they can't. I do have an inkling who they're from, but I don't know if they definitely are. It must be costing him an arm and a leg," the 29-year-old added.
The model, who separated from fiance Alex Reid last September, feels it is an old-fashioned way of wooing a girl.