Ireland Baldwin and her half-sister, Carmen
Ireland Baldwin looks to be smitten with her baby half-sister.
The model, 18, posted a cuddly Instagram
photo on Friday holding little Carmen Gabriela
, her father Alec Baldwin
's 5-month-old daughter with wife Hilaria
"Spending my morning with chubby bunny," Ireland captioned the adorable snapshot.
The photo comes after a tumultuous week for little Carmen, who Alec claims
was "patted down" by airport security in the Bahamas on Monday. Ireland also criticized the process
, Tweeting, "I don't know why I always get special checks at airports. Am I really that sketchy?"
Travel woes aside, the family has been enjoying spending time together in New York City, where Alec, Ireland and Hilaria attended Bent on Learning's annual Inspire! Gala
"It's a second chance for me, in a way," Alec has told PEOPLE
of daughter Carmen's birth. "Everybody knows I had a pretty unpleasant custody battle for Ireland."
For her part, Ireland was thrilled to welcome a new baby into the Baldwin brood.
"You have been born into one crazy family," she wrote on Tumblr
. "We are going to have so much fun together … I promise you I will always be there for you no matter what!"