Lindsay Lohan celebrates her sister Ali's 30th birthday with rare photos.

The sisters shared a gorgeous selfie, showing their close bond.

Ali flaunted a stunning bikini look on the beach in one pic.

Another snap captured them lounging by the pool in bikinis and stylish sunglasses.

Lindsay posted a sweet throwback pic of toddler Ali under a patchwork blanket.

Lindsay's heartfelt caption expressed her love for her sister on Instagram.

Ali reciprocated the love with a touching message in the comments.

Fans poured in with birthday wishes and praised Ali's music.

Lindsay and Ali's strong sisterly bond extends to their collaboration in Lindsay's 2022 movie, where Ali's music played a significant role.