Dr Shah said that urethral stricture is caused by scarring in the urethra, usually from trauma.
The couple later went for dinner at Aqua Shard, on level 31 of The Shard in London.
Usually it is wide enough for urine to flow freely through it, but when it narrows or something is blocking the flow, it can cause urine to spray as if a finger was being held in front of a hose.
The urethra is a tube that carries urine from the bladder so it can be released from the body.
However, if you are consistently spraying, he urges you to see a doctor.
The glamorous model, who is the daughter of wealthy Australian Travis 'The Candyman' Beynon, wore pieces from the Loves x Pour Moi edit and Pour Moi's Parisienne range.