I didn’t track the first time she did this, but it’s also of note that Sam has supported her own weight on her legs, and has been doing so for at least a week. She’ll “stand” up in our laps. I can hold her just above her waist, helping with core balance a little, but she can do all of the standing herself. I think if she just weren’t so top-heavy with her head, she could probably stand briefly on her own. No way to test that, of course.