The Whiplash star popped the question to his longtime girlfriend while they were on a fun safari adventure in South Africa over the weekend, and Sperry's sister, Christie Sperry York, shared some cute snapshots of the happy couple to Instagram on Monday.
"Can't believe the last Sperry girl is engaged!" York captioned the slideshow of six photos. "Love both of you guys to pieces and so incredibly happy for this new chapter in your love story!"
A few of the pics in the sweet collection included a shot of Sperry's new sparkler, which she showed off in front of a reclining lion, and while holding a rose with a tag commemorating their relationship.