Hot ladies out and about and NOT with Justin Bieber! Youngin' Sofia Richie took in the Guns N' Roses concert in LA last night and boyfriend Bieber was nowhere in sight!

Have the young lovers already parted ways or is the Biebs just not a GNR fan? Both seem likely ...

Sofia was out with friends earlier in the day, shopping at Fred Segal. The 17-year-old showed off her eclectic style with a baseball jersey-inspired dress, slip-on neoprene shoes, her round hippie sunglasses and a fringed cross-body bag. Gee, a lot going on there!

Meanwhile, Justin's ex Hailey Baldwin was strolling around West Hollywood with a pal on Thursday, showing off her lovely long legs. Hailey entered the Selena/Justin/Sofia online love triangle recently when she commented on social media about her ex's new relationship with the underage "model" Sofia Richie and how trolls were slamming the hookup in defense of Hailey and Bieber's longtime love Selena Gomez. Baldwin wrote, somewhat cryptically: "We've all had our fair share of things we've done, both good and bad. What makes the present so powerful is when we take complete responsibility for our actions, we allow ourselves self-growth. Misplacing the blame onto someone else isn't going to get you to the next stage in life, so try not to manipulate a situation to make yourself look better. The truth always come to light, so it's better just to own it."

So just what IS the truth now? Are Justin and Sofia still together or was it a short-lived fling?