How old will they all be in S3?

In the book Penelope and Colin's story takes place 10 years after Anthony and Kate. They're 28 and 33 if I'm not mistaken and Penelope being a spinster is one of the reasons she can choose her own colours for her dresses and stuff. Her mum doesn't care as much cause she knows Penelope will never find a husband.

Do we know how old they will be in S3? Cause we can clearly see a change in colours for Penelope so I'm wondering if we will have a sort of time jump to explain that.