Steven Tyler For Halloween I'm a Father It's Not What You Think!!!

10/31/2018 6:57 AM PDT

Steven Tyler Says He's Now An Ordained Minister And He's Not Kidding

EXCLUSIVE

Steven Tyler is in the marriage biz ... and he's kinda chomping at the bit to officiate the proper nuptials for Justin Bieber and Hailey Baldwin

We got the Aerosmith frontman Tuesday at LAX and he flashed us a card he got in the mail, making him an ordained minister who can now officiate weddings. The price was certainly right ... he paid 80 bucks.

As for his Halloween costume ... well remember, just a couple days ago Steven tweeted a hilarious picture of himself with the following caption:

Check out the video ... 2 of his 3 costume choices are way more like a cameo than a getup.