Indian national Pramender, who goes by one name, pleaded guilty on Friday to one charge of attempting to procure the commission of an indecent act by a child and one charge of molesting a child under 14.
A third charge of trespassing was taken into account for his sentencing.
The girl was at Jalan Besar Swimming Complex with her aunt, uncle and five cousins on March 31. She exited one of the pools at about 5.50pm, and saw the accused, who was also in the pool, staring at her.
The victim collected her phone and shower items, wrapped herself with a towel, and walked towards the female toilet. Pramender followed her from behind and caught up to her at the entrance of the female toilet.
He then asked her to follow him on Instagram and the victim turned him down. Despite this, the man took her phone and as it was unlocked, he accessed her Instagram account and used it to follow his account.