Megan Fox hit up the Vanity Fair Oscars party alone and sans engagement ring.

The actress rocked a black, strapless gown with a plunging neckline.

She paired the outfit with a diamond necklace and ring, but NOT her emerald and diamond engagement ring.

There still seems to be trouble in paradise for Fox and her fiancé, Machine Gun Kelly. The couple first sparked breakup rumors in February.

She reportedly found “DMs and text messages” on MGK’s phone that led her to “believe he has been having an affair.”

According to a Page Six source, the “Transformers” actress was seen attending the Vanity Fair afterparty alone,

She made it a point to stick by Noah Centineo’s side for a majority of the night.

“She was spending a lot of time talking to Centineo,” the witness observed. “She looked like the cat who ate the canary.”

More signs of an impending breakup.