It might have been Pippa O’Connor’s birthday on Friday but all eyes were on her brother, Cian, at the Dublin Horse Show. Excitement reached a fever pitch on Friday as the Aga Khan took place, with the USA being crowned champions in the end. Pippa O'Connor cheers on her brother Cian in the Aga Khan at the Dublin Horse Show. Sharing a photo of herself and her mum at the RDS in 2012, Pippa said: 'It's Aga Khan day, our mum's fave day of the year. Pic: Pippa O'Connor / Instagram'She'd dig her nails into my leg practically jumping every jump watching Cian.'