|DR. BILLY INGRAM/WIREIMAGE|
“Looks like [Donald] and I are going to have a little storm trooper of our own!” she wrote, sharing a photo of a light blue t-shirt with the Star Wars solider embroidered on the front.
Cobb has a familiar pregnancy pal to enjoy the next few months with: her best friend Jessica Simpson - who is expecting her second child with husband Eric Johnson.
The former Scrubs star is parent to four children from previous relationships: Kobe, 11, Dade and Kaya, both 13, and Sean, 16.