Bristol Palin shares sweet pic of brother Trig and daughter Sailor on Instagram

/ Source: TODAY

Bristol Palin got the best possible present last month when daughter Sailor was born just days before Christmas. And Sailor is the gift that keeps on giving.

On Monday, Palin shared one of Sailor's latest and sweetest moments on Instagram.

In the photo, the 3-week-old bundle of joy is wrapped up in the arms of Bristol's little brother Trig, who leans in to give Sailor a kiss.

"Trig officially loves her," Palin wrote in the caption that accompanied the pic on Instagram.

The 7-year-old clearly isn't the only one.

Palin recently shared a shot of another 7-year-old who can't get enough of Sailor — her son, Tripp.

RELATED: Bristol Palin shares new photos of baby Sailor Grace: 'So in love'

And the mom of two is certainly smitten herself.

Shortly after Sailor's birth, Palin told her followers on Instagram that her "heart just doubled."