The insider tells PEOPLE that Hailey "loved having Justin there" to support her beauty brand's big international event

While Hailey Bieber's Rhode lipgloss-holding phone case was a hit, her new lipgloss-carrying belly chain is getting a mixed reaction.

The vintage Chanel silk dress with an asymmetrical lace detailing down the side was purchased from Chloe Vintage. She wore her hair up in a messy updo that matched the carefree energy of the night.

The limited-edition flavor follows the release of its six existing tints: Ribbon, Toast, Raspberry Jelly, Pbj and Espresso.

Hailey Bieber offered her hot take on the butter yellow trend, calling the shade "played out." "It's not butter yellow because it's LEMON," the Rhode founder wrote in response to comments about her brand's latest lip launch.

The secret is to balance momentum with meaning. Every beauty founder dreams of accomplishing what Rhode just achieved: a billion-dollar valuation, a cultural following, and a brand that seems to dominate every platform it touches.

“Summer club lemontini girli,” Hailey wrote alongside a series of snaps wearing a vintage yellow Pucci two piece, with a matching bikini underneath. Or should we say, thongkini.

Amazon Prime Day is in full swing, and the beauty deals are too good to miss. Case in point: Avène's Cicalfate+ Restorative Protective Cream, a barrier-repairing moisturizer beloved by none other than Hailey Bieber.