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Reese Witherspoon, Instagram

Instagram

Sweet child of Reese Witherspoon! Little Tennessee has gotten so big.

It has been less than four weeks since Witherspoon shared an updated pic of her little man on Instagram. But in Thursday's Insta-post by the Wild actress, it seems her youngest one might out grow those 2-year-old clothes really soon.

Witherspoon's pic of Tennessee shows him looking surprised as he's surrounded by the lush plants in their front yard. "#Hideandseek (#vacationstyle). I see you!" wrote the mom of three.

It was probably the toddler's adorable looks that gave him away (or his cute aqua blue shorts).

Reese Witherspoon, Instagram

Instagram

Witherspoon and husband Jim Toth announced they were expecting baby Tennessee, their first child together, one year after the couple officially tied the knot back 2011. Their son was born on Sept. 27, 2012.

The toddler may have his mother's golden locks, but he's looking more and more like his dad.

Back in March, Witherspoon posted a pic of Tennessee and his dad hand-in-hand wearing matching ensembles. Tennessee wore a bright yellow raincoat, while his CAA agent dad opted for the blue one.

Reese is one lucky mom. All together now: "Aww!"