The former Spice Girl, 44, and her husband Christian Horner OBE, 42, are “overjoyed” to be expecting their first child together.
“The couple is overjoyed with the good news and cannot wait to welcome the newest addition to their family,” a statement for the couple read.
Fans guessed Horner was pregnant when she uploaded a quote illustration on Instagram.
The quote read: “God bless mother nature #mamaspice” and accompanied a cartoon of a pregnant woman.
Horner is already mum to 10-year-old Bluebell Madonna, from a previous relationship.
Horner married Formula 1 Team Principal Christian Horner in May 2015.
Congrats to the couple!