Gwen Stefani is giving fans insight into her Easter celebrations with Blake Shelton. The No Doubt rocker, 54, took to Instagram on Sunday, March 31, to share a video of herself spending time outdoors picking flowers with her husband, 47, and getting ready to host a holiday dinner for her family. In the clip, shared to the tune of Stefani’s most recent duet with Shelton, “Purple Irises,” the blonde beauty could be seen hanging out in a field, riding shotgun in the passenger seat of a pickup truck and setting the table for her guests. “Happy Easter !! 🐣🩷 💐 gx,” Stefani, who shares sons Kingston,…