TMZ Live

Tami Erin -- the actress who played Pippi Longstocking in the 1988 movie -- insists she had nothing to do with her sex tape being shopped around town ... in fact, she tells TMZ Live, she'll stop at nothing to make sure it NEVER gets released.

39-year-old Erin called in moments ago and she was irate -- blaming a bitter ex-boyfriend for attempting to sell a private hardcore sex tape to the media.

She said, "I think he's the biggest piece of sh*t on the planet for doing this to me."

As for any sex tape deal, Erin says she has not been approached about selling the tape, which is good ... because in order for a company to release this kind of footage, it would need Erin's permission.

She sounds really angry ... and we're not calling BS ... but we do want to point out that Erin's not exactly averse to public displays of sexuality, posting photos like these on Twitter over the last couple months. Nice bod.

Marvin Gaye's son is out for blood in his war with Robin Thicke, telling "TMZ Live" he resents Thicke's lawsuit against the Gaye estate over "Blurred Lines" ... and is strongly insinuating he plans to respond with legal action of his own.

Marvin Gaye III dropped us a line Wednesday, and he's not happy ... basically saying Thicke has disrespected the Gaye family by shamelessly lifting his father's famous tunes for the hit song (plus many other Thicke tracks).

As you know, Thicke has filed a lawsuit against the Gaye estate, asking a judge to head off any legal action from the Gayes by ruling "Blurred Lines" does NOT violate Marvin's copyrights.

Marvin III says Thicke's lawsuit is a total slap in the face.

Marvin III hedged when we asked flat out if he plans to sue Thicke for copyright infringement ... but the message was clear.

If you're looking for TMZ Live ... you are tardy for the party.

We've officially moved TMZ Live to an earlier time -- 10 AM PT -- so, join us back here tomorrow (and every other day, M-F) at that time to get in on the conversation.