The E! reality stars were spotted watching Chris Brown and Trey Songz serenade a sold-out crowd at The Forum and shared many a selfie during the show.
"My baby boo bear," Khloé wrote alongside a blue-tinted shot of the two ladies' famous faces.
And in a follow-up Instagram post, the youngest Kardashian sister shared a picture of herself walking backstage with several pals including Tyga.
Both Kylie and Khloé were dressed to the nines in head-to-toe black ensembles for their evening out.
The 17-year-old rocked a T-shirt, miniskirt and killer thigh-high lace-up boots to catch the live performance.
Meanwhile, Koko went for a similarly sexy look in skinny jeans, leather ankle boots and a matching leather fringe jacket.
And it's no secret that Khloé and French are back on—especially after their most recent PDA-filled romantic getaway in Florida last week—but all eyes are still on the are-they-or-are-they-not duo, Kylie and Tyga.
Late last night the rapper took the radio waves to address the romance rumors during a radio interview with 92.3 AMP Radio.
"Whether if I tell the world that I love her or I don't, it's gonna be me to dictate that, and how I want to keep my friendship and relationship with her," he said.
"I feel like it doesn't matter what the world thinks. If you're around somebody, and you love being around that person, that's all that matters. I don't feel like what anybody could say would change that…how I feel for her as a person…She's just a good person, she's got great energy."
Tyga continued, "We've got a group of friends, we've been hanging out for the longest… I've been knowing her and her family for six, seven years, so it's all love there, and we're going to continue to grow."
Keeping Up With the Kardashians Season 10 premieres March 15 at 9 p.m. only on E!