Showing already!

Sidney
I am now 7 weeks and 4 days but feel huge. I am already showing. I have already gained 5 lbs! I am only 4'10" so 5 lbs is a lot for me. We plan on telling everyone on Sunday. But on Saturday I have dress shopping with my sister-in-law and there is no way to hide it. I promised my hubby I would wait to tell her. What do I do?