Jenner, 20, and her famous rapper beau, 26, began dating in April 2017.
Following their whirlwind romance, the couple welcomed their "beautiful and healthy baby girl", Stormi, on February 1, 2018.
The Keeping Up With The Kardashian's star very rarely shares snaps with her partner, but it appears his Birthday was worthwhile for the PDA.
According to PEOPLE, the smitten model and business owner rented out an LA-based theme park, Six Flags to help her man enjoy fun-filled activities on his 26th birthday.
We're glad they're FINALLY Instagram official and look forward to more cute snaps of the happy parents!