Seeing One Direction star Louis Tomlinson push a baby stroller is the sweetest thing ever, isn't it? One of the singer's fans was clearly shocked at the sight, however, as the 1D'er made his way through a Calabasas shopping mall on Thursday, with baby Freddie relaxing comfortably in his stroller.

Louis stepped hit up Borders Books, joined by a pal and a bodyguard. Seeing as Louis wasn't with lady love Danielle Campbell, we imagine his ex, baby mama Briana Jungwirth had approved this outing. Tomlinson browsed for about an hour in the bookstore, spending lots of time in the kids section. He wants to see his boy off to a good start, reading to his little one!

Tomlinson is close to reaching a temporary custody settlement with Jungwirth, but a major condition of the agreement was preventing Campbell from seeing the baby boy. Apparently Jungwirth was concerned about any interaction Campbell might have during the "critical bonding period" between mother and son, and she wants the pop star to visit Freddie at her house, alone.

Taking little Freddie out, is the other option, and Louis looks proud to push his baby's pram around Calabasas, which is straight up adorable!