They attended the Spitzmaus Mummy in a Coffin and other Treasures exhibition opening in Vienna, Austria earlier this week, reports dailymail.co.uk.
The actress slipped into a cream and purple wrap dress, embellished with an animal print sleeve. She accessorised with a pair of green evening gloves.
Meanwhile, visual artist Kopp rocked up to the event in a purple three-piece suit, complemented with a textured fuschia tie.
She shares her children Honor and Xavier Swinton Byrne, 21, with her former partner Byrne. The pair struck up a relationship in 1989, but eventually called it quits in 2003.
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