*EXCLUSIVE* Cam Gigandet treats his family to a day at Disneyland

Congratulations are in order for Cam Gigandet and Dominique Geisendorff.

The Twilight star, 32, and his actress fiancée, 30, are expecting their third child, she announced via Instagram Monday.

“So thankful for the troops out there that protect this little (expanding) family of mine,” the mom-to-be captioned ultrasound images, along with the hashtags “beyond grateful” and “#notgratefulforthegnarlymorningsickness.”

The engaged couple are already parents to two children: 6-year-old daughter Everleigh Rae and 2-year-old son Rekker Radley.

The Twilight actor has also starred on Reckless and can next be seen in Broken Vows.

so thankful for the troops out there that protect this little (expanding) family of mine… #beyondgrateful #notgratefulforthegnarlymorningsickness

A photo posted by Dominique (@wildheartwhispers) on May 25, 2015 at 4:34pm PDT