Keibler appeared at the Burning Man festival -- along with about 61,000 others -- in Black Rock Desert, Nev., on Monday. This year's festival, which wrapped up on Labor Day, featured a "Cargo-Cult" theme which reportedly celebrated the "mythical arrival of an alien visitor."
Keibler, 33, hit the festival with her rumored new boyfriend, Jared Pobre. In her Instagram post, she said: "#BurningMan #Lifechanging," as she posed to mimic the statue shown behind her. Keibler and Clooney split in July.
Meanwhile, also on Monday, Elisabetta Canalis, who split from Clooney in 2011, soaked up the sun in a tiny bikini that exposed some impressive abs while in Italy.
Earlier in the day, according to the photo agency that secured the snapshots, the 34-year-old went shopping with her mother in the area.