Blazing Sevens is the first named foal of Trophy Girl (Warrior's Reward), who was unraced at two and won twice at four.

Second dam Storm West (Gone West) was unraced and has seven winners from nine foals. They are headed by King David (Hat Trick), winner of the Grade 1 Jamaica H. in 2012, and the stakes winner Bertsgoldenmissile (Golden Missile). Storm West is a half-sister to the stakes-placed Wild Bill Hiccup (Carson City).

Third dam Storm Attack (Storm Bird) was unraced. She is a half-sister to the sire Glacial Storm (Arctic Tern).

The fourth dam is Hortensia (Luthier), a multiple Group winner in France and the dam of Glacial Storm, a multiple Group winner in England and France who was second in the Gr.1 Epsom Derby and third in the Gr.1 Irish Derby in 1988.

Trophy Girl has a yearling filly by Constitution and a filly foal by Goldencents, and has been covered by Essential Quality.