The duo, who were married for seven years, were spotted enjoying a day out at the park together on Saturday while their children took part in a football game.
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Heidi and Seal were photographed laughing and joking with one another as they supported their sporty youngsters Henry, eight, Johan, seven, and Lou, four, as well as Heidi's ten-year-old daughter Leni from a previous relationship.
While it was Seal who sat next to Heidi this Saturday, last weeked it was the 41-year-old's supermodels boyfriend Vito Schnabel who cheered from the sidelines.
The 28-year-old art dealer was seen exchanging several lingering looks with his Germany-born beauty, pausing to retreive a rogue football that had been kicked away from the pitch.
Heidi and Vito went public with their romance earlier this year and were recently spotted showing their affection for each other at the US Open.