I certainly agree with you about the previous poster's unnecessary comment about how Leighton should be "intellectually stimulating" enough for her BF was off the mark, but where do you come off judging that Sebastian isn't good enough for Leighton. I don't see why it's anyone's business to judge whether she's good enough for him or vice versa. This might be the Leighton thread, but as far as I know, we're here to judge her fashion and not her personal life.
As for the Chloe bag which have been bugging me. Mystery solved. I'm pretty sure it's not the Sally - as I have it and it doesn't look like the bag Leighton is carrying. It does however, look a lot like the Elsie bag from Chloe which Sienna Miller was spotted carrying.