Those two girls are the Brit's nieces. A few pictures of them can be found here.

2006:		Sailing with Katinka and Svea
2005:		Sailing with Katinka
		Now two of them
2004:		Sailing with Katinka
		The new House
2003:		Sailing with Katinka
		Experience new things
2002:		Sailing with Katinka
		Katinkas first year