Lydia and Georgia, who made her TOWIE debut on Sunday (27 July) headed into London together for the glitzy launch of new TV channel truTV.
Dressed in a pretty pink skirt and white camisole, teamed with a statement floral necklace, Lydia looked sweet and summery as she arrived at the bash with her sister.
Georgia, meanwhile, kept things simple and chic by choosing to wear a black dress and she too accessorised with a chunky necklace and carried a grey clutch.
While at the event, held at the Old Truman Brewery, Lydia and Georgia posed for a picture together, which has since been shared on Instagram.
Writing alongside the snap, Lydia said: "Sister love, the strongest love in the world @xgeorgiabrightx."
Earlier this week, TOWIE fans watched as Georgia confronted James 'Arg' Argent in a burger bar in Essex.
The pretty blonde made it perfectly clear that she is not impressed with him and would rather Lydia steered clear.
However, judging by Lydia's most recent Instagram posts about Arg, it seems she may not get her way - especially after his romantic Westlife gesture!
The new free to air channel truTV, the home of larger than life characters in real situations, will hit UK screens on the 4th August on Freeview channel 68, Sky channel 565 and FreeSat channel 154.