Resilience!

Carrie Fisher's daughter Billie Lourd is staying strong after the death of her mother and grandmother just after Christmas and by her side through it all has been boyfriend Taylor Lautner.

The couple headed to the Barney's sale Saturday and enjoyed some lunch at department store restaurant. They were low-key, focused on each other ... and their phones -- perhaps watching the Womens Marches in LA, DC, NY and around the world yesterday, as many of us were.

The young actress has been keeping it quite together in the new year; she's been posting tributes to her mother and grandmother as part of the healing process and no doubt, Taylor's been a key part of the process. Lourd posted this Instagram a week ago, remembering the close bond she had with her mom and acknowledging that humor would help her heal ...