The Best Big Sister! 'Teen Mom 2' Star Chelsea Houska Shares An ADORABLE Video Of Aubree With Newborn Watson

Best sister award goes to... Aubree! Teen Mom 2 star Chelsea Houska shared the cutest video of her oldest child with her new baby brother, Watson Cole.

"My heart," the mother-of-two wrote.

Chelsea welcomed her second child last week, but her first with her new husband, Cole DeBoer.

Chelsea and Cole married in an extremely private ceremony in early October.

Could these photos get any cuter?!

What do you think of Chelsea's adorable video? Let us know your thoughts in the comments section!