Here, experts share some tips.Wear slightly oversized clothing. Go up a size or two, suggests Ali Levine, stylist and mom of three. ... Disguise the midsection. ... Distract the eye. ... Snack often to avoid bouts of nausea. ... Soothe your stomach. ... Rest up when you can. ... Sip mocktails (or make an excuse) ... Don't commit to travel plans.