Is Kylie Jenner a Bad Influence? Kim Kardashian Says Sister "Is Trying to Make Me Eat Carbs!"

Keeping Up With the Kardashians star is determined to lose 15-20 pounds of baby weight

By Rebecca Macatee Aug 06, 2014 2:35 PMTags

Kylie Jenner isn't exactly helping Kim Kardashian in her quest to lose 15-20 pounds of baby weight!

On Tuesday night, the sisters had dinner at La Scala, where Kim said her 16-year-old sister was "trying to make me eat carbs!"

Carbs are a big no-no at the moment for Kim, who tweeted just hours before hitting up the Italian restaurant in Beverly Hills for dinner, "Starting diet TODAY! No carbs. Crazy workouts. Who's with me?"

Apparently Kylie's not on board with this weight loss plan!! And while Kim, 33, looks pretty amazing to us, she's determined to get back into tip-top shape—"No more excuses."

PHOTOS: See Kim Kardashian, Kylie Jenner and more stars on our E! News Instagram Wall!

"I'm not gonna call it baby weight bc that's an excuse," she tweeted. "I just gained weight & that's it. Why is it so much harder to lose after baby though!""

North West's mama, who credits the Atkins diet for helping her to shed some of those pregnancy pounds, asked fans to "wish me luck on the dieting," admitting, "it's sooooo hard for me!"

Watch: Kim Kardashian West Unveils Sunless Tanning Product

She has a theory, too, on why slimming down can be particularly tough for new moms. "I think after having a baby u get so excited u lost a lot of weight," she explained, "then u get comfortable & eat how you used [to] & it creeps back up."

Oh, doll, you look great! Besides, between all those trips to the gym and running after 1-year-old Nori, she's totally allowed to splurge on a bowl of pasta every now and again!

Tune in to a brand new Keeping Up With the Kardashians this Sunday at  9 p.m. on E!