I know someone who prides herself on being so good at putting together the perfect travel capsule that she can always go away with just carry-on luggage. However, I saw a picture of her at the airport on one of her recent trips, and as well as her small carry-on suitcase she also had quite a substantial shoulder bag.
Is it usual to be allowed to have two pieces of carry-on luggage? Does it depend on the airline or the class of travel (I'd be surprised if this person travels first class, she likes a bargain) or have I just been misunderstanding what I could take all this time? I thought it was just literally one small case or one bag.