Hayden Panettiere Had Sweet Birthday Plans With Daughter This Week

Hayden Panettiere‘s shocking death is getting more heartbreaking by the day … because it’s being reported she had sweet birthday plans this week with her daughter.

Hayden would have turned 37 on Friday … and Page Six reports that she was planning to visit her 11-year-old Kaya in Germany for a fun bash.

It seems the trip had been in the works for a while and was planned to coincide with her birthday … and she was telling her inner circle how excited she was to see her little one … and celebrate another year around the sun.

Sadly, that isn’t happening … Hayden died Sunday in a South Carolina apartment.

Her death is under investigation by authorities … and we exclusively first told you that the DEA has hopped on the investigation.