1: Adria Biles celebrates sister Simone's birthday with a touching note.

2: Adria praises Simone's strength and resilience in heartfelt message.

3: Sisters share bond through gymnastics journey.

4: Adria expresses gratitude for Simone's support and inspiration.

5: Simone's birthday brings sisters closer together.

6: Adria reflects on Simone's impact on her life.

7: Sisters celebrate milestone birthday with love and admiration.

8: Adria shares memories of growing up with Simone.

9: Adria's birthday message encapsulates the deep bond between the Biles sisters.