Nicole Schumacher

One mom says Post Malone might be the sweetest star ever, after he helped wish her son a happy 21st birthday.

Nicole and her son Andrew ran into the rapper at a restaurant in Beverly Hills to celebrate his 21st birthday.

She tells us that Andrew was excited to have a beer for the first time. He was going to be surprised while he waited for the brewsky.

PM received a bottle of sake from the table next to him, and as he was about to return to his table, Nicole told him that his son was a big fan and would love to meet him. Post more than necessary.

You can check out the video. Post gives Andrew a warm smile and handshake, which means a lot to the young man.

Andrew has a hard time speaking, and rarely are strangers as kind and patient with him as Post.

A surprise meet and greet was the icing on the cake for mom and son who were in town visiting her other son who works in L.A.

Andrew!