‘Arrogant’ Millie Bobby Brown Letting Fame Get To Her Head On 'Godzilla' Set

Stranger Things star Millie Bobby Brown, who just spent several weeks filming the new Godzilla flick, has apparently turned into a bit of a monster herself, RadarOnline.com has learned exclusively!

“Gone was the humble Millie we knew and loved,” a source told RadarOnline.com. “She’s so confident there are times it borders on arrogance.”

The insider adds the relative newbie, who is still just 14-years-old, used to be open to advice from Hollywood veterans. Now she feels like she knows it all.

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“Millie just says, ‘Thanks, but I know what I’m doing,’” reports the source. “It’s great that she has this healthy ego, but there’s definitely a worry that fame is going to her head at warp speed.”

Brown skyrocketed to fame playing paranormal teen “Eleven” on the hit Netflix series, and was recently rewarded with a new contract that will pay her as much as $350k per episode in season three, rivaling her adult co-stars, like Winona Ryder.

This isn’t the first time those closest to the budding star have feared Brown’s burgeoning ego. As RadarOnline.com reported, the young star refused to offer her BFF, Dance Moms breakout Maddie Ziegler a role in an upcoming big-budget movie Brown is starring in and producing.

“Millie is being very matter of fact about this, but that’s probably why Maddie is upset,” a source told RadarOnline.com. “She thinks the fame has gone to Millie’s head and hopes she snaps out of it.”