Hey [Friend's Name],

I hope this message finds you well! I wanted to personally invite you to my birthday party on [Date] at [Time] at [Location]. I would love for you to come and celebrate with me.

There will be food, drinks, music, and lots of fun activities planned for the evening. I truly hope you can make it and join in on the festivities.

Please let me know if you can attend so I can plan accordingly. Looking forward to celebrating with you!

Best,
[Your Name]