Sandra Bullock baby jacket

Sandra Bullock had an evening out last night with her true love -- son Louis!

The Oscar-winning actress bundled up on a cold New York City night for some wining and dining ... and maybe some whining! ... with the little tyke. We wonder if news of her ex-husband Jesse James' engagement to Kat Von D caught her off guard or if perhaps she expected it or maybe even knew about it before the rest of us did???