C.C.
I have 4 kids. 3 years apart between the first 3 and then 7yr gap between the 3rd and 4th. Even now my youngest is almost 4 and she will get jealous if I hug another kid or even daddy. I try to help her understand they everyone gets attention from mom. And it is so and so's turn. New babies tend to get most of the attention. That's normal too. They are tiny, helpless and need it. :) Try setting a timer when she notices and starts to want your attention. Set the timer for 5-10 mins and tell her you will set the baby down and spend a little time with her when it goes off. You don't have to set the timer every time you hold your baby, just when the other one decides she needs attention. This also helps her understand that she doesn't get attention immediately just because she demands it. Sometimes the situation allows for holding baby and sitting at the table while the other colors and watching her so she has your attention. So she starts to see that attention can be shared. Timers are life savers in our house. It really helps the little ones get a grasp for time and waiting then getting the 'reward'. The reward in this situation is your undivided attention. Getting her a new special doll is an excellent thing to do also. Make sure it is new (new used works too) but new to her. So special attention is made to her new baby too. :)