Diet is going well but I'm still looking rather dumpy for my 5'1" frame 
Got a big day out on Monday and want - need - to look my best otherwise I'm going to feel awkward and ugly all day.
I'm probably a size 12 at the moment and am at least 3kgs overweight (more like 9kgs to my ideal weight) and all of my extra weight is around my tummy - I even got asked when my baby was due a couple of weeks ago even though DD is now 10 months old! My friends say I don't look pregnant but, well they're my friends and are hardly likely to tell me otherwise are they.
What could I wear (besides my now daily staple Spanx) which might help me look my best? It needs to be cheap, not too dressy and practical - I need to get across London in it with a 3.5 year old and a 10 month old without looking like I've been dragged through a hedge when I get there.
I quite fancied jeans and boots with some sort of baggy top to disguise things but am a little worried that I'll look like a lollipop with skinny legs and my great big tum on top. I have a GG chest too so I am quite top heavy on my short legs.
I'd be really grateful for any help. I was really looking forward to Monday but am beginning to dread it now.