Despite having a baby on it, (the kitten,) The Sun is not a pregnancy card.
The Sun means: Ultimate freedom to be one's raw n@ked self. Not always a good thing.
If The Sun sits at the center of the layout, it could be interpreted as: "Tone it down! Think before you speak! Your raw self is making others around you uncomfortable!"
More often though, The Sun in a reading means that who I'm reading for needs to break free from what stifles them. This could be a controlling friendship, a job that overworks them, an abusive relationship, or that it's time to leave home to make a life of their own.
In short, The Sun usually means a some kind of relationship is about to 'set you free.' It all depends on what cards sit next to this one.