Ireland's biggest annual equestrian event, the Dublin Horse Show, opened at the RDS in Ballsbridge this morning.

The five-day event is expected to attract around 100,000 visitors.

More than 125 competitions are being held at the show, including the Aga Khan Nations Cup and the Land Rover Puissance.

The best of Irish-bred horses, competitors and breeders are expected at the venue over the next five days.

Aimed at promoting the Irish horse industry, the 141st Dublin Horse Show is expected to generate more than €40m for the local economy.

Opening day highlights included the Speed Stakes, Irish Sports Council Classic and the first of two qualifiers for the Connolly's Red Mills International class for seven and eight-year-old horses.

Tomorrow is Ladies Day at the RDS, while for many the highlight of the week will be the Nations Cup competition for the famous Aga Khan Trophy on Friday.

The programme includes 14 international show jumping events, with almost €1m in prize money to be won.

Aside from the equestrian competitions, organisers said visitors can enjoy an array of music, entertainment, arts and crafts, as well as food and fashion.