Jennylyn Mercado's son Alex Jazz turns 15 years old

Jennylyn Mercado’s son, Alex Jazz, just turned 15!

On Instagram, the celebrity mom shared a snap of the birthday boy holding his cake.

“Another year older, but still the same handsome baby boy of mine! Happy birthday, Jazzy boy!” the Kapuso actress wrote in the caption.

“I love you so much!” she added with the hashtag #jazzyboy.

Jazz is Jennylyn's son with ex-partner Patrick Garcia .

Meanwhile, Jennylyn is set to star on “Love. Die. Repeat.” with Xian Lim .

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